Endmyopia Wiki - User contributions [en]

Child Myopia

2024-07-19T16:20:48Z

Lloydmom: /* A Final Note */

==Introduction==
All parents approaching EndMyopia for their children, come with a sense of urgency. Please understand this is not a good approach. You need to be calm and rational in order to make good choices for your child. Remember '''myopia is NOT a medical condition''', it is a [[refractive state]]. If your child had good vision before, they should be able to have it again. If your child does have a medical condition there might be limitations to how much this method will help, however the practices are worthwhile applications for their future vision just the same. Ideally, a myopic adult would start with EndMyopia then help a child. It is very important that an adult who fully understands the method and what vision improvement requires works with the child in question.

==Please Note==
It might be helpful to consider that myopia control and reversal is less like potty training (go hard for a few weeks and it's typically done with) and more like getting them to pick up after themselves (every parent knows this is a long haul lesson). Small changes over time will be a good approach.

==Getting Started==
Most parents new to the method have the first instinct to take away their child's correction and take away most of, if not all of, their favorite close-up activities.

Let's start with the desire to take away correction. Don't.

If your child was just told they need glasses and they have never worn them before by all means hold off on introducing correction, you might even find with new [[habits]] they won't need correction, as long as you are actively working on their vision, it is not harmful (or negligent) to not rush into correction. But instead, take some time to assess your child's vision for yourself, track trends in their vision, and introduce better vision habits; and only then introduce appropriate correction if still needed.

But, if a child is already wearing correction; they can't just stop. They need to learn to wear the correction only when needed and should never wear their full correction for near work. If their correction is stronger than -2 they will likely require [[differentials]] for near work. Ideally it is best to provide the correction for a greater distance than to have your child looking at things closer in order to eliminate that need for correction; because the closer they are to the object of focus the more strain there is on the eye. Always the goal should be to maximize their distance when in a situation of static viewing; such as reading, playing video games and computer work. The worst danger zone is under 50cms, as you can quickly surmise this includes basically everything within arms' reach for children.

In actual application especially in school it might be difficult to introduce differentials, if your child is content to remove their glasses and is confident they can see well enough doing so for near work, this is most likely easier than having them switch throughout the school day. Remind them to be mindful of switching focus often, to prevent [[ciliary spasm]]. For those who cannot remove their correction but are still unlikely to switch correction in school it is even more important to have those good habits as well as a [[normalized]] correction that is only just sufficient to see the board to help minimize [[hyperopic defocus]]. Bifocals and multifocal lenses are not typically indicated, a bit on that [[mainendmyopiasite:progressive-lenses-good-myopia-rehab/|from Jake here]]. Also for application at school you might find [[Writing:I am a student, Help|this article]] useful.

Now on to that other reflex reaction. If you take away all of your child's favorite and accustomed activities, they are not going to see your love for them in it. They are most likely going to hate the sudden onset of restrictions and feel like they are being punished for being myopic. While this is clearly not your intent, this is almost certainly how they will feel. Try to make gradual changes. Reducing time in extreme and static close up needs to be a priority; so anytime you can shift phone and/or tablet activities to a tv at a greater distance this will be progress. Many parents also use book stands to help increase and encourage consistent reading distance. Introduce the [[20-20-20 rule]] during close up right away, and as soon as possible [[differentials]] if/as needed for static close up. It is a good idea to start reducing the close work time itself where possible, but again keeping in mind how important it is that your child doesn't feel penalized for their myopia.

One thing that might help with the 20-20-20 rule is a "stretch buddy" place an object (favorite toy perhaps) at a distance from your child during close up and encourage them to "stretch their eyes" to see the object at regular intervals, picking out details on it as much as possible. Don't worry overmuch about activities like Legos and Play-doh, 3-D objects and activities tend to have a lot of shifting focus, these activities are not particularly harmful, provided there is good lighting and your child gets good distance vision as well. It is static vision that is the primary concern.

==Measuring==
Getting your child to look at a [[Snellen Chart]] is probably best saved primarily for measurements, and for younger children there are kid friendly snellen charts that will probably prove more engaging. It is a good idea to have several charts, it is easy to memorize a frequently used chart, so rotate often for more accurate testing. You will of course want to do centimeter [[measurement]]s as well. Try to keep measuring light and fun, causing yourself or your child stress with measuring is not going to be beneficial for anyone. Jake does recommend hanging a snellen chart in the home; however for children it is probably a good idea to have well placed text stimulus beyond that, keeping some novelty to the snellen chart might well help your child engage more when you are doing measurements.

==Active Focus==
Children have a hard time grasping [[active focus]] but encouraging them to engage with their vision through play is easy to do, when you can get them to do this outside, even better. Some ideas here: [https://wiki.endmyopia.org/wiki/Focus_Games_for_Kids focus games]. It is important to discourage squinting and blinking unnaturally hard in order to clear blur. These are both bad habits to form and difficult to break. If you have a fairly good handle on active focus, your child is a little older and feel you can convey active focus to your child on their level by all means do so. However for the most part children are going to be more inclined to clear blur when it is part of an activity, rather than the clearing of blur being the activity alone.

==Prioritize Stabilization==
While it is understandable that you want to reverse your child's myopia quickly, take into account that it is quite likely that their eyes are currently getting worse. Stopping that progression is the first big step, and even if that is all you manage, that is a win. Correct use of correction for a given task, time outdoors engaging with distance vision, and good near work habits are typically enough to accomplish this goal.

Your child may or may not choose to reverse their myopia, and hard as it is for a parent to accept, that is their choice. But enabling them to stop its progression and giving them the option to reverse it, now that you know it is possible, is an advantage that most people don't have; children and adults alike.

==Important==
'''Please don't make any changes to your child's correction until you can make an informed decision'''. Communicate with your child about their vision, even preschool aged children can relay their own feedback. Marching your child to the optometrist every 6 months is going to be a point of stress and is wholly unnecessary, do your own measurements, and keep it light. Keep in mind how you would deal with your child concerning any other matter. Don't forget you are building better vision habits for life, there is no need to frustrate yourself or your child by pushing for fast changes and results. Remember this is not a medical condition, certainly don't neglect it, but this is more of a marathon than a sprint, so slow and steady is the way to go.

==See Also==
[https://wiki.endmyopia.org/wiki/Guide:My_Child_Has_Myopia Guide for child myopia]

[https://wiki.endmyopia.org/wiki/Focus_Games_for_Kids Focus games for kids]

[https://endmyopia.org/help-i-need-to-fix-my-childs-eyes-fast/?fbclid=IwAR07-YkAVQkUztoC_l3Fjd4CUCvkug6f6K3gm2xsQeGjgyKF2pZmCKoM04w Jake's take on looking for the quick fix to Child Myopia]

[[Writing:I am a student, Help]]

==References==

Videos by Jake: https://endmyopia.org/young-child-glasses-one-focal-plane/?fbclid=IwAR248tHeLLJ4owkJXrTocuOK_SPs4rXyBk4LOAOmP1ki2z7coxYATJ_mlB8

https://www.youtube.com/watch?v=XxOYG8weq8Y

Full playlist for Child Nearsightedness: https://www.youtube.com/playlist?list=PLgB_5pbB86Giioahj-P0PBHlervYKStyp

The EndMyopia Blog:

[https://endmyopia.org/child-myopia-prescription-strategies/ Child myopia diopter strategies]

[https://endmyopia.org/active-focus-the-key-to-reversing-myopia/ Child active focus]

[https://endmyopia.org/?s=childhood+myopia Child myopia 1]

[https://endmyopia.org/category/child-myopia-2 Child myopia 2]

[https://endmyopia.org/active-focus-games-for-your-children/ Active Focus games for kids]

==A Final Note==
Obviously, there is the whole rest of the method to add to this, and if you need more help Jake has an add-on to the adult [[BackTo20/20]] program. Though there are other self guided courses as well. Absolutely start with the free primer found [https://courses.endmyopia.org/mentored-courses/?_gl=1*1gne67h*_gcl_au*MTUzMDc4MjI0LjE3MjE0MDU4NjI. here].

Blur adaptation

2024-05-16T14:51:10Z

Lloydmom:

'''Blur adaptation''' (or '''blur desensitization''', or blur habituation) is where someone has become used to lower levels of correction on either a psychological or physiological level.

It usually occurs after someone has been wearing significantly under corrected glasses, or no correction for long periods of time when they should have been wearing more correction. This causes active focus to fail, as the demand is too high, and is fixed by increasing to an appropriate level of correction.

When you live next to the train tracks and the train always goes by, people say "you get used to the noise." Blur adaptation is the same thing but with blur instead of train noises.

{{#ev:youtube|3-Bam28FjWk||inline}}

==Avoiding Blur Adaptation==
There is no benefit to living in excessive blur, many people do this thinking that it will give them a larger capacity for improvement, and/or the ability to improve faster. This is not only ''not'' the case, but frequently the opposite of this notion is true and the excessive blur slows progress, if not stalling it altogether. It is highly important to be sure you are getting good stimulus by using [[correction]] that provides only a little blur that you can actively clear with [[active focus]]; and be sure to be mindful to clear that blur to avoid becoming accustomed to its presence. Remember, correction is a tool, and EndMyopia principles require that correction is leveraged properly for improvement.

So how do I know if I am blur adapted? The most tell tale sign; does everything seem clear until you try to read text at a reasonable distance? It is actually pretty easy to think most things are clear, but typically text is the best way to judge if things are as clear as they seem. Be honest in your assessment, is that text actually clear? Or are you just getting by on good enough.

==Resolving Blur Adaptation==
If you are, or suspect you are, already blur adapted because you over reduced or even quit using correction, or else have been in a much lower correction than you need for some time; it is a good idea to address this issue first, before trying to move forward with EndMyopia. This usually means wearing full [[20/20 correction]] for a time to give the visual cortex a clarity reference. This might require a gradual increase to work your way up to that correction if you have been a long time without correction. For low myopes, intermittent use of correction, particularly in low light might be enough.

[[Differentials]] should still be used, if you require them. Depending on how low your under correction has been until now It might be a good idea to assess the correction you are accustomed to as a differential. If you can make them work as diffs then you will need one less focal change.

It is not a good idea to try to reduce to [[normalized]] before you have spent that time in the higher correction, a few weeks is likely all you need. Without that clear reference and sufficient correction you might have a very difficult time finding/using active focus. Without active focus your eyes are unlikely to improve.

Another important note:

Almost everyone using stronger correction to combat blur adaptation observes the same "changes" in their vision. That is that their eye seem worse after using the stronger correction. Things seem more blurry than previously upon removal of the stronger correction and centimeter measure measurements often take a hit. THIS IS NORMAL. In fact this is a sign that your cortex has adjusted it's standard for what it perceives to be clear. It can certainly feel like a step in the wrong direction but once again active focus depends on the goal of clarity, the cortex needs to remember what clear is if your biology is going to understand that it needs to clear blur. The biology will only change with the right stimulus (repeated demand for more clarity). Vision improvement depends on the right stimulus.

{{#ev:youtube|s6l869wGyA8||inline}}

=={{resize|130%|𝗦𝗲𝗲 𝗔𝗹𝘀𝗼}}==
* [[Guide:Not reducing too quickly]]
* [https://www.youtube.com/watch?v=X7g4WLoo3WU Blur Horizon explained | Jake Steiner]
* [https://www.youtube.com/watch?v=OYNwz_gcNXQ Fixing Low Myopia Blur Adaptation if you never wore glasses | Jake Steiner]

=={{resize|130%|𝗥𝗲𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀}}==
*The EndMyopia Blog:
**https://endmyopia.org/unicorn-farming-nonsense-bates-method-no-glasses/
**https://endmyopia.org/keith-goes-back-wearing-glasses-2030-2010/
*Jake on YouTube: [https://www.youtube.com/watch?v=s6l869wGyA8&t=4s Blur Adaptation is Bad]
[[Category:Articles]]

Blur adaptation

2024-04-01T12:48:31Z

Lloydmom:

'''Blur adaptation''' (or '''blur desensitization''', or blur habituation) is where someone has become used to lower levels of correction on either a psychological or physiological level.

It usually occurs after someone has been wearing significantly under corrected glasses, or no correction for long periods of time when they should have been wearing more correction. This causes active focus to fail, as the demand is too high, and is fixed by increasing to an appropriate level of correction.

When you live next to the train tracks and the train always goes by, people say "you get used to the noise." Blur adaptation is the same thing but with blur instead of train noises.
{{#ev:youtube|3-Bam28FjWk||inline}}

==Avoiding Blur Adaptation==
There is no benefit to living in excessive blur, many people do this thinking that it will give them a larger capacity for improvement, and/or the ability to improve faster. This is not only ''not'' the case, but frequently the opposite of this notion is true and the excessive blur slows progress, if not stalling it altogether. It is highly important to be sure you are getting good stimulus by using [[correction]] that provides only a little blur that you can actively clear with [[active focus]]; and be sure to be mindful to clear that blur to avoid becoming accustomed to its presence. Remember, correction is a tool, and EndMyopia principles require that correction is leveraged properly for improvement.

==Resolving Blur Adaptation==
If you are, or suspect you are, already blur adapted because you over reduced or even quit using correction, or else have been in a much lower correction than you need for some time; it is a good idea to address this issue first, before trying to move forward with EndMyopia. This usually means wearing full [[20/20 correction]] for a time to give the visual cortex a clarity reference. This might require a gradual increase to work your way up to that correction if you have been a long time without correction. For low myopes in particular intermittent use of correction, particularly in low light might be enough.

[[Differentials]] should still be used, if you require them. Depending on how low your under correction has been until now It might be a good idea to assess the correction you are accustomed to as a differential. If you can make them work as diffs then you will need one less focal change.

It is not a good idea to try to reduce to [[normalized]] before you have spent that time in the higher correction, a few weeks is likely all you need. Without that clear reference and sufficient correction you might have a very difficult time finding/using active focus. Without active focus your eyes are unlikely to improve.

Another important note:

Almost everyone using stronger correction to combat blur adaptation observes the same "changes" in their vision. That is that their eye seem worse after using the stronger correction. Things seem more blurry than previously upon removal of the stronger correction and centimeter measure measurements often take a hit. THIS IS NORMAL. In fact this is a sign that your cortex has adjusted it's standard for what it perceives to be clear. It can certainly feel like a step in the wrong direction but once again active focus depends on the goal of clarity, the cortex needs to remember what clear is if your biology is going to understand that it needs to clear blur. The biology will only change with the right stimulus (repeated demand for more clarity). Vision improvement depends on the right stimulus.

{{#ev:youtube|s6l869wGyA8||inline}}

=={{resize|130%|𝗦𝗲𝗲 𝗔𝗹𝘀𝗼}}==
* [[Guide:Not reducing too quickly]]
* [https://www.youtube.com/watch?v=X7g4WLoo3WU Blur Horizon explained | Jake Steiner]
* [https://www.youtube.com/watch?v=OYNwz_gcNXQ Fixing Low Myopia Blur Adaptation if you never wore glasses | Jake Steiner]

=={{resize|130%|𝗥𝗲𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀}}==
*The EndMyopia Blog:
**https://endmyopia.org/unicorn-farming-nonsense-bates-method-no-glasses/
**https://endmyopia.org/keith-goes-back-wearing-glasses-2030-2010/
*Jake on YouTube: [https://www.youtube.com/watch?v=s6l869wGyA8&t=4s Blur Adaptation is Bad]
[[Category:Articles]]

Child Myopia

2024-03-22T22:42:59Z

Lloydmom: /* Getting Started */

Measurement

2024-03-01T18:37:34Z

Lloydmom: /* References */

:''See also:'' [[Guide:How to measure your eyesight]]
==Stay calm==

In general, your measurements actually change wildly within the day. They're mostly useful for checking that you're not going off track with habits changes, or for measuring relative changes in vision in different circumstances. (e.g. diet, time of day, and activity)

As far as what progress you can see, that appears to actually be fairly individual. You need to measure to learn about how you see things. But think of general changes on the span of multiple weeks, or even a month or so.

Measurements are a learning process, not a goal

== Centimeter Measurement ==
The cm measurement uses a basic optics formula to calculate the diopters of correction you need to see clearly long distance.
# Hold a ruler up to your eye, and measure how far away you can still read text without [[blur]] in centimeters. This is your "cm measurement".
#* The ideal precise measurement is from the surface of your eyeball, but this is obviously not safe, so measure from some facial structure near your eye.
#* Consistency is more important than accuracy, you want to be able to track your small changes over the course of a day, and larger changes over time.
# Calculate diopters from the measurement: [[Diopters]] = -100cm/cm measurement.
# If your result is stronger than -4D, and you wear glasses, you'll need to correct for [[vertex distance]] to convert this from contacts diopters to glasses diopters.
# If your result is stronger than -4, you'll likely have problems getting consistent readings since the margin for error is much smaller. For best results: please see: [[Guide:Measuring with differentials]].

== Trial Refraction ==
If your myopia is high and/or complex, you may need a [[trial lens kit]] to measure your own vision, or you may just stick to professional [[optometrist]] exams.

<youtube>n2ku6gJ3z7E</youtube>

== Tools ==
* [[mainendmyopiasite:focal-calculator/calc.html|EndMyopia Diopter Calculator]]
** [https://endmyopia.org/another-diy-diopter-measuring-tool/ Making the physical measurement easier] (EndMyopia blog link)
*[[Varakari's Vision Log Tool]]
* [https://endmyopia.org/measure/ Measurement] (EndMyopia blog link)
* [https://testflight.apple.com/join/wuAvRvdL The iOS Sight Meter App]
* [https://play.google.com/store/apps/details?id=org.endmyopia.calc The Android Diopter Calculator]
* [https://courses.endmyopia.org/wp-content/uploads/2024/03/endmyopia-myopia-ruler-letter-size.pdf Printable diopter ruler] (From the blog)

==See Also==

* [[Astigmatism measurement]]

* [[Guide:How_to_measure_your_eyesight|How_to_measure_your_eyesight]]

* [[Guide: measuring with differentials| Guide to measuring with Differentials for high myopes]]

==References==
{{reflist}}[https://courses.endmyopia.org/measure/?fbclid=IwAR01yIImN77PO3L1yU0LpTTxfW11uIRSFAbj9KoB53_2KxOP_hrZjoQYYDk Blog post on measurment]
[[Category:Articles]]

List:Measurement tools

2024-03-01T18:36:13Z

Lloydmom: /* cm measurements */

The following is a list of tools created to measure vision improvement progression, usually in [[centimeters]].

==cm measurements==
* https://endmyopia.org/focal-calculator/calc.html
* [[Varakari's Vision Log Tool]]
* [https://play.google.com/store/apps/details?id=org.endmyopia.calc Diopter Calculator Android App]
* [https://courses.endmyopia.org/wp-content/uploads/2024/03/endmyopia-myopia-ruler-letter-size.pdf EndMyopia's printable diopter ruler]

See Also:

[[Measurement|Measurement wiki page]]

Measurement

2024-03-01T18:32:09Z

Lloydmom: /* Tools */

Guide:How to measure your eyesight

2024-03-01T18:20:41Z

Lloydmom: /* References */

Measuring your eyesight can be done in several different ways. Remember eyesight fluctuates from day to day based on many factors, one measurement alone is not necessarily the most accurate indication of your vision. Before you order new correction, or decide to reduce, try to get enough measurements to have a good idea what your typical vision is. Since you are measuring yourself, you can take the time to get the best idea of what your most consistent vision trends are. You will gain the most complete understanding of your vision trends should you track all three measuring methods.

==Centimeter measurements==
Centimeter measurements are seeing your [[distance to blur]] with a tape measure held against a screen or book. 12 point font is recommended, you will see blur at the same distance regardless of font size, however it will be easier to distinguish the edge of blur with 12 pt font. Remember you are seeking the point where clarity is no longer sharp, '''not''' the edge of readability (though if you wish to notate this too in your records you certainly may).

[[Measurement tools|You can see various tools to accomplish this here.]]

This test can be used to check both near and far points, the difference between which determines [[presbyopia]].

==Eye chart==
A [[Snellen chart]] is good as it controls a lot of variables. If you stand at the '''same distance''' with the '''same given pair of glasses''' in '''similar, or same lighting''' and notice an improvement over time, then it's safe to say your eyesight is improving.

If you check your Snellen with your next, i.e. reduced pair of [[normalized]], and you can see the 20/50 line, you could start using those, provided you are reasonably comfortable with that much blur. But always keep your previous correction for driving, make sure you are being safe and within legal guidelines, check your local vision requirements. <ref>{{cite jake|https://endmyopia.org/2050-the-brilliant-super-simple-rule-for-improving-eyesight/}}</ref> Also note: the 20/50 standard is outdated and not actually recommended any longer, so please be aware of that fact should you choose to follow this.

Other static eye charts are possible, as well as the dynamic Dyop chart.

Please note: The longer charts tend to be more accurate in determining your real world vision in a given correction. For further assurance of real world vision meeting expectations avoid using excess lighting and/or active focus during measurements.

==Landmarks (real world objects)==
This usually works best with signs. Take a given object, preferably with text that you see very frequently and see whether there's an improvement over time in how well you can see the object.

This one might not produce hard figures like the other two methods, so it's better to use this in conjunction with the other the measuring methods and never as an exclusive means of assessing your vision, as it can be far too objective and you can not control important variables like lighting.

However if you are looking to have a tangible point of reference for this also, try this: [[Quick Reference: Real World Acuity Guide]]

==See Also==
* [[Measurement#Stay_calm | Measurements - Stay calm]]

* [[Guide:Measuring with differentials]]

==References==
{{reflist}}2. The EndMyopia Blog, https://courses.endmyopia.org/measure/?fbclid=IwAR01yIImN77PO3L1yU0LpTTxfW11uIRSFAbj9KoB53_2KxOP_hrZjoQYYDk
(with links that Include printable diopter ruler)
[[Category:Guides]]

Guide:How to measure your eyesight

2024-03-01T18:18:33Z

Lloydmom: /* References */

Guide:Measuring with differentials

2024-03-01T13:39:59Z

Lloydmom:

It is not uncommon to have trouble with measuring accurately, especially for individuals who have -4 or more diopters of myopia, or a fair bit of cylinder requirement. The reason being that there is a much smaller margin for error in a range where one cm or less makes a difference of a quarter [[diopter]]. Also for those with higher cyl needs find that directional blur adds a lot of challenge . The best way to overcome either issue is to measure with [[differentials]].
Chances are you know your differential correction without even having to look it up so substitute your correction and edge of blur into the example.

==Example==
Suppose you are wearing a -4 differential in both eyes and you find your edge of blur to be 68cm.
Go to the [https://endmyopia.org/focal-calculator/calc.html calculator], and enter 68cm. The result is -1.5. The -4 you started with combines with the -1.5 you just determined you still require to indicate your true myopia to be -5.5.

Suppose you have [[Guide:OD/OS|OD/OS]] -4.25/-3.25, and find your edge of blur to be 68cm.

Go to the [https://endmyopia.org/focal-calculator/calc.html calculator], and enter in 68cm. The result is '''-1.50'''. Add this value to both of your eyes (be careful with negative numbers).

<math>OD\ (right\ eye): -4.25+(-1.50)=-5.75</math>

<math>OS\ (left\ eye): -3.25+(-1.50)=-4.75</math>

So, your true myopia values are OD/OS -5.75/-4.75. Simple!

==See Also==
[[Guide:How to measure your eyesight]]

Snellen chart

2024-02-12T00:13:19Z

Lloydmom: /* How to use a Snellen Chart to measure visual acuity */

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A '''Snellen chart''' is a standard method of measuring [[visual acuity]]. A chart is rated for the distance it should be viewed at, and the lowest line that can be read has a visual acuity result number next to it. The standard distance for Snellen charts is 20 feet or 6 meters. Smaller versions are available for use in smaller indoor spaces. Generally, most myopes can be corrected to the [[20/20]] line unless they have visual acuity problems other than myopia. There is no direct correlation between visual acuity and [[myopia]]. The Snellen chart is the most commonly used way of testing if someone has sufficient corrected visual acuity to drive legally. Your [[optometrist]] will use the Snellen chart as a reference, to see what refraction will allow you to read the lowest on the chart.
{{clear}}
==Definition of the numbers==

The acuity is expressed as the ratio of the distance (usually 20ft or 6m but can be less) to the letter size, expressed as the distance at which the letter subtends an angle of 5 arc-minutes. (Or equivalently, as multiples of the height at which the letter subtends 5 arc-minutes at a distance of 1 unit of distance). 5 arc-minutes just means 5/60 of a degree. So
* 20/20 means 5 arc-minutes at 20 feet
* 20/16 means 4 arc-minutes at 20 feet
* 6/12 means 10 arc-minutes at 6m

The critical gaps that need to be resolved are 1 arc-minute, so that's really what defines the required acuity.

==How to use a Snellen Chart to measure visual acuity==
# Read the documentation that came with your chart to determine what distance it is designed to be viewed at. This is usually 10 feet, 20 feet, 3 m or 6m. It may say right on the chart, on the back, or in the description of the product where you got it.
# Post the chart at eye level
# Make a mark on the floor at the distance the chart is rated for.
# Stand so that your face is above that line.
# Gently cover one eye (without actually touching it).
# Read the lowest line you can see clearly.
# Attempt to read the next line down.
# Have an assistant tell you if you got the letters right or move forward to check. If you got more than half of the letters right on that line, then the ratio marked for that line is your visual acuity. Record.
# Repeat steps 5-8 with the other eye covered.
# Repeat once more with both eyes together.

Please note: Unless you are in low myopia territory snellen measurements are intended to measure your vision with your distance correction.

Also important to know: Lighting will effect your results and due to the nature of the diopter bubble longer charts (6m/20ft) are more accurate than the short charts (3m/10ft), though both are perfectly acceptable methods to track vision trends over time.

==How to use a Snellen Chart with refraction==
{{main|Trial lens kit}}

==Tools==
* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]
* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20feet/6meters]

* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20feet/6meters]

* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]
* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]
* [https://github.com/mminer237/denim-weasel Snellen chart generator]
* [https://eyes.arizona.edu/sites/default/files/eyechart.pdf Banner Eye Care Visual Acuity Test (BECVAT) V 2.0]
* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].

==See Also==

* [[Astigmatism_measurement]]
* [[Guide:How to measure your eyesight]]

==References==
{{reflist}}

[[Category:Articles]]

Guide:How to measure your eyesight

2024-02-08T13:41:34Z

Lloydmom: /* Eye chart */

Snellen chart

2024-02-08T13:35:03Z

Lloydmom: /* See Also */

{{Infobox diagnostic
| name = Snellen chart
| image = Snellen chart.svg
| alt =
| caption =
| pronounce =
| purpose = Snellen chart is used to estimate visual acuity
| test of =
| based on =
| synonyms =
| reference_range =
| calculator =
| DiseasesDB = 
| ICD10 = 
| ICD9 =
| ICDO =
| MedlinePlus = 
| eMedicine = 
| MeshID =
| OPS301 = 
| LOINC = 
}}
A '''Snellen chart''' is a standard method of measuring [[visual acuity]]. A chart is rated for the distance it should be viewed at, and the lowest line that can be read has a visual acuity result number next to it. The standard distance for Snellen charts is 20 feet or 6 meters. Smaller versions are available for use in smaller indoor spaces. Generally, most myopes can be corrected to the [[20/20]] line unless they have visual acuity problems other than myopia. There is no direct correlation between visual acuity and [[myopia]]. The Snellen chart is the most commonly used way of testing if someone has sufficient corrected visual acuity to drive legally. Your [[optometrist]] will use the Snellen chart as a reference, to see what refraction will allow you to read the lowest on the chart.
{{clear}}
==Definition of the numbers==

The acuity is expressed as the ratio of the distance (usually 20ft or 6m but can be less) to the letter size, expressed as the distance at which the letter subtends an angle of 5 arc-minutes. (Or equivalently, as multiples of the height at which the letter subtends 5 arc-minutes at a distance of 1 unit of distance). 5 arc-minutes just means 5/60 of a degree. So
* 20/20 means 5 arc-minutes at 20 feet
* 20/16 means 4 arc-minutes at 20 feet
* 6/12 means 10 arc-minutes at 6m

The critical gaps that need to be resolved are 1 arc-minute, so that's really what defines the required acuity.

==How to use a Snellen Chart to measure visual acuity==
# Read the documentation that came with your chart to determine what distance it is designed to be viewed at. This is usually 10 feet, 20 feet, 3 m or 6m. It may say right on the chart, on the back, or in the description of the product where you got it.
# Post the chart at eye level
# Make a mark on the floor at the distance the chart is rated for.
# Stand so that your face is above that line.
# Gently cover one eye (without actually touching it)
# Read the lowest line you can see clearly.
# Attempt to read the next line down.
# Have an assistant tell you if you got the letters right or move forward to check. If you got more than half of the letters right on that line, then the ratio marked for that line is your visual acuity. Record.
# Repeat steps 5-8 with the other eye covered.
# Repeat once more with both eyes together.

==How to use a Snellen Chart with refraction==
{{main|Trial lens kit}}

==Tools==
* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]
* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20feet/6meters]

* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20feet/6meters]

* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]
* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]
* [https://github.com/mminer237/denim-weasel Snellen chart generator]
* [https://eyes.arizona.edu/sites/default/files/eyechart.pdf Banner Eye Care Visual Acuity Test (BECVAT) V 2.0]
* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].

==See Also==

* [[Astigmatism_measurement]]
* [[Guide:How to measure your eyesight]]

==References==
{{reflist}}

[[Category:Articles]]

Snellen chart

2024-02-08T13:34:35Z

Lloydmom: /* See Also */

{{Infobox diagnostic
| name = Snellen chart
| image = Snellen chart.svg
| alt =
| caption =
| pronounce =
| purpose = Snellen chart is used to estimate visual acuity
| test of =
| based on =
| synonyms =
| reference_range =
| calculator =
| DiseasesDB = 
| ICD10 = 
| ICD9 =
| ICDO =
| MedlinePlus = 
| eMedicine = 
| MeshID =
| OPS301 = 
| LOINC = 
}}
A '''Snellen chart''' is a standard method of measuring [[visual acuity]]. A chart is rated for the distance it should be viewed at, and the lowest line that can be read has a visual acuity result number next to it. The standard distance for Snellen charts is 20 feet or 6 meters. Smaller versions are available for use in smaller indoor spaces. Generally, most myopes can be corrected to the [[20/20]] line unless they have visual acuity problems other than myopia. There is no direct correlation between visual acuity and [[myopia]]. The Snellen chart is the most commonly used way of testing if someone has sufficient corrected visual acuity to drive legally. Your [[optometrist]] will use the Snellen chart as a reference, to see what refraction will allow you to read the lowest on the chart.
{{clear}}
==Definition of the numbers==

The acuity is expressed as the ratio of the distance (usually 20ft or 6m but can be less) to the letter size, expressed as the distance at which the letter subtends an angle of 5 arc-minutes. (Or equivalently, as multiples of the height at which the letter subtends 5 arc-minutes at a distance of 1 unit of distance). 5 arc-minutes just means 5/60 of a degree. So
* 20/20 means 5 arc-minutes at 20 feet
* 20/16 means 4 arc-minutes at 20 feet
* 6/12 means 10 arc-minutes at 6m

The critical gaps that need to be resolved are 1 arc-minute, so that's really what defines the required acuity.

==How to use a Snellen Chart to measure visual acuity==
# Read the documentation that came with your chart to determine what distance it is designed to be viewed at. This is usually 10 feet, 20 feet, 3 m or 6m. It may say right on the chart, on the back, or in the description of the product where you got it.
# Post the chart at eye level
# Make a mark on the floor at the distance the chart is rated for.
# Stand so that your face is above that line.
# Gently cover one eye (without actually touching it)
# Read the lowest line you can see clearly.
# Attempt to read the next line down.
# Have an assistant tell you if you got the letters right or move forward to check. If you got more than half of the letters right on that line, then the ratio marked for that line is your visual acuity. Record.
# Repeat steps 5-8 with the other eye covered.
# Repeat once more with both eyes together.

==How to use a Snellen Chart with refraction==
{{main|Trial lens kit}}

==Tools==
* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]
* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20feet/6meters]

* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20feet/6meters]

* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]
* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]
* [https://github.com/mminer237/denim-weasel Snellen chart generator]
* [https://eyes.arizona.edu/sites/default/files/eyechart.pdf Banner Eye Care Visual Acuity Test (BECVAT) V 2.0]
* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].

==See Also==

* [[Astigmatism_measurement]]
* [Guide:How to measure your eyesight]

==References==
{{reflist}}

[[Category:Articles]]

Snellen chart

2024-02-08T13:34:18Z

Lloydmom: /* How to use a Snellen Chart to measure visual acuity */

{{Infobox diagnostic
| name = Snellen chart
| image = Snellen chart.svg
| alt =
| caption =
| pronounce =
| purpose = Snellen chart is used to estimate visual acuity
| test of =
| based on =
| synonyms =
| reference_range =
| calculator =
| DiseasesDB = 
| ICD10 = 
| ICD9 =
| ICDO =
| MedlinePlus = 
| eMedicine = 
| MeshID =
| OPS301 = 
| LOINC = 
}}
A '''Snellen chart''' is a standard method of measuring [[visual acuity]]. A chart is rated for the distance it should be viewed at, and the lowest line that can be read has a visual acuity result number next to it. The standard distance for Snellen charts is 20 feet or 6 meters. Smaller versions are available for use in smaller indoor spaces. Generally, most myopes can be corrected to the [[20/20]] line unless they have visual acuity problems other than myopia. There is no direct correlation between visual acuity and [[myopia]]. The Snellen chart is the most commonly used way of testing if someone has sufficient corrected visual acuity to drive legally. Your [[optometrist]] will use the Snellen chart as a reference, to see what refraction will allow you to read the lowest on the chart.
{{clear}}
==Definition of the numbers==

The acuity is expressed as the ratio of the distance (usually 20ft or 6m but can be less) to the letter size, expressed as the distance at which the letter subtends an angle of 5 arc-minutes. (Or equivalently, as multiples of the height at which the letter subtends 5 arc-minutes at a distance of 1 unit of distance). 5 arc-minutes just means 5/60 of a degree. So
* 20/20 means 5 arc-minutes at 20 feet
* 20/16 means 4 arc-minutes at 20 feet
* 6/12 means 10 arc-minutes at 6m

The critical gaps that need to be resolved are 1 arc-minute, so that's really what defines the required acuity.

==How to use a Snellen Chart to measure visual acuity==
# Read the documentation that came with your chart to determine what distance it is designed to be viewed at. This is usually 10 feet, 20 feet, 3 m or 6m. It may say right on the chart, on the back, or in the description of the product where you got it.
# Post the chart at eye level
# Make a mark on the floor at the distance the chart is rated for.
# Stand so that your face is above that line.
# Gently cover one eye (without actually touching it)
# Read the lowest line you can see clearly.
# Attempt to read the next line down.
# Have an assistant tell you if you got the letters right or move forward to check. If you got more than half of the letters right on that line, then the ratio marked for that line is your visual acuity. Record.
# Repeat steps 5-8 with the other eye covered.
# Repeat once more with both eyes together.

==How to use a Snellen Chart with refraction==
{{main|Trial lens kit}}

==Tools==
* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]
* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20feet/6meters]

* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20feet/6meters]

* [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]
* [https://www.teachengineering.org/content/cub_/activities/cub_human/cub_human_lesson06_activity1_eyechart.pdf Printable Snellen Eye Chart 6m(20 feet)]
* [https://github.com/mminer237/denim-weasel Snellen chart generator]
* [https://eyes.arizona.edu/sites/default/files/eyechart.pdf Banner Eye Care Visual Acuity Test (BECVAT) V 2.0]
* Some people with astigmatism may use the [https://en.wikipedia.org/wiki/Stenopaeic_slit stenopaeic slit]<ref>https://community.endmyopia.org/t/francois-journey-to-20-20/10428/3</ref> as a measuring tool
* Alternatively, you can use an [http://www.i-see.org/astigmirror.pdf astigmatism mirror/fan] along with [https://endmyopia.org/diy-tools-how-to-measure-your-astigmatism-diopters/ this guide for estimating astigmatism].

==See Also==

* [[Astigmatism_measurement]]
* <nowiki>[[Guide:How to measure your eyesight]]</nowiki>

==References==
{{reflist}}

[[Category:Articles]]

Writing:Stop staring down your snellen chart

2024-01-25T13:15:39Z

Lloydmom:

{{Writing|author=Lloydmom}}


I see it all the time in the community, usually in newbies, but not always... people are staring down their snellen charts for long sessions, or worse still putting their children to do so.

PLEASE DON'T!

I really do wish people would stop this! There is nothing natural about it and I have heard of people having like retinal burn in from it. This means the image of the chart was visible to them long after they stopped looking at it. YIKES! Let's please be kind to our eyes.

Go outside, or look around your surroundings inside, when you come across text give it a bit of extra attention (minutes at most) because it is easiest to detect blur and resolution on text, but then move on to something else. Fixed focus is a big part of the problem, switching focus is natural. Use your eyes naturally and increase your awareness. Try to notice details, look for movement, connect with your visual stimulus. The idea here is not to do weird things like stare at a snellen chart for absurd amounts of time; but rather to look with the intent to see, and to see well. That in turn provides the biological feedback that your vision is a priority.

When Jake says to check your vision on the chart after longer sessions of close up to see if you have spasm or how anything is impacting your vision; that is all it is, a check in, to help you understand what is impacting your vision and how. It doesn't hurt to have snellen charts around, when using them correctly they are great tools. But like all things there is then the possibility to misuse the tool. Please do not misuse the tool.

Staring down your chart on the regular is not active focus, take the time to explore the many descriptions of active focus, get an understanding of the goal, it seems like a big thing at first but it really boils down to looking with the intent to see well; and always always always be kind to your eyes.


[[Category:Project Miscellaneous]]

Writing:Stop staring down your snellen chart

2024-01-25T13:12:21Z

Lloydmom: Created page with "{{Writing|author={{subst:REVISIONUSER}}}}  I see it all the time in the community, usually in newbies, but not always... people are staring down their snellen charts for long sessions, or worse still putting their children to do so. PLEASE DON'T! I really do wish people would stop this! There is nothing natural about it and I have heard of people having like retinal burn in from it. This means the image of the chart was visible to them..."

{{Writing|author=Lloydmom}}


I see it all the time in the community, usually in newbies, but not always... people are staring down their snellen charts for long sessions, or worse still putting their children to do so.

PLEASE DON'T!

I really do wish people would stop this! There is nothing natural about it and I have heard of people having like retinal burn in from it. This means the image of the chart was visible to them long after they stopped looking at it. YIKES! Let's please be kind to our eyes.

Go outside, or look around your surroundings inside, when you come across text give it a bit of extra attention (minutes at most) because it is easiest to detect blur and resolution on text, but then move on to something else. Fixed focus is a big part of the problem, switching focus is natural. Use your eyes naturally and increase your awareness. Try to notice details, look for movement, connect with your visual stimulus. The idea here is not to do weird things like stare at a snellen chart for absurd amounts of time; but rather to look with the intent to see, and to see well. That in turn provides the biological feedback that your vision is a priority.

When Jake says to check your vision on the chart after longer sessions of close up to see if you have spasm or how anything is impacting your vision; that is all it is a check in to help you understand what is impacting your vision. It doesn't hurt to have snellen charts around, when using them correctly they are great tools. But like all things there is then the possibility to misuse the tool. Please do not misuse the tool.

Staring down your chart on the regular is not active focus, take the time to explore the many descriptions of active focus get an understanding of the goal and always always always be kind to your eyes.


[[Category:Project Miscellaneous]]

Zero diopter reset

2023-11-26T18:15:59Z

Lloydmom: /* Differentials */

When introducing a reduction, it is not advised to just slap them on your face, as the visual cortex associate the change with lowered clarity, which is bad. You want to start with lower correction before introducing the reduction, which makes the visual cortex associate it with increased clarity.

Do: be sure to wait the recommended time frame (4-6 weeks minimum) between correction changes. And as a rule stagger your reductions. For instance your first ever reduction should be [[Differentials]] then after 4-6 weeks to adjust to those corrections as well as introduce and solidify good [[habits]] you can bring on the [[Normalized]] correction.

Do: be sure your new reduction is actually justified by [[measurement]] trends in your vision.

==Normalized==
As a rule, you never want to wear your new lower normalized on the same day after wearing your full correction or previous normalized correction.

What you do is take a day you can manage with [[Natural focal plane | no correction]] (or [[differentials]] in the case of high myopia) from the beginning of the day for as long as reasonably possible, until you start to feel uncomfortable. This way when you introduce your new [[normalized]] the relative standard for expected clarity is that things are much clearer and this is a good change. The good association with your new correction is a big advantage.

Make sure to wait for the right day. There is no good reason to rush a reduction, waiting an extra day or more will not do harm, in fact a little time to lock in your current gainz is a good idea.

Keep the previous normalized (or full correction) handy for night driving.

==Differentials==
If you already wore the previous differentials, do not wear the new differentials until the next day. Once again no need to rush a reduction.

==Low Myopia==
Instead of reducing from -1.5, -1.25, or -1 (based on personal preference), the current EM strategy is to alternate zero and normalized correction, which is called "Low Myopia Zero Diopter Reset Trick".<ref>https://endmyopia.org/low-myopia-when-can-you-stop-wearing-glasses/</ref>

==References==
* Article: https://endmyopia.org/guru-trick-reduce-normalized-easy-productive/
* Video: https://www.youtube.com/watch?v=zzrQb4pCFkQ

Measurement

2023-11-14T16:22:36Z

Lloydmom:

:''See also:'' [[Guide:How to measure your eyesight]]
==Stay calm==

In general, your measurements actually change wildly within the day. They're mostly useful for checking that you're not going off track with habits changes, or for measuring relative changes in vision in different circumstances. (e.g. diet, time of day, and activity)

As far as what progress you can see, that appears to actually be fairly individual. You need to measure to learn about how you see things. But think of general changes on the span of multiple weeks, or even a month or so.

Measurements are a learning process, not a goal

== Centimeter Measurement ==
The cm measurement uses a basic optics formula to calculate the diopters of correction you need to see clearly long distance.
# Hold a ruler up to your eye, and measure how far away you can still read text without [[blur]] in centimeters. This is your "cm measurement".
#* The ideal precise measurement is from the surface of your eyeball, but this is obviously not safe, so measure from some facial structure near your eye.
#* Consistency is more important than accuracy, you want to be able to track your small changes over the course of a day, and larger changes over time.
# Calculate diopters from the measurement: [[Diopters]] = -100cm/cm measurement.
# If your result is stronger than -4D, and you wear glasses, you'll need to correct for [[vertex distance]] to convert this from contacts diopters to glasses diopters.
# If your result is stronger than -4, you'll likely have problems getting consistent readings since the margin for error is much smaller. For best results: please see: [[Guide:Measuring with differentials]].

== Trial Refraction ==
If your myopia is high and/or complex, you may need a [[trial lens kit]] to measure your own vision, or you may just stick to professional [[optometrist]] exams.

<youtube>n2ku6gJ3z7E</youtube>

== Tools ==
* [[EndMyopia Diopter Calculator]]
** [https://endmyopia.org/another-diy-diopter-measuring-tool/ Making the physical measurement easier] (EndMyopia blog link)
*[[Varakari's Vision Log Tool]]
* [https://endmyopia.org/measure/ Measurement] (EndMyopia blog link)
* [https://testflight.apple.com/join/wuAvRvdL The iOS Sight Meter App]
* [https://play.google.com/store/apps/details?id=org.endmyopia.calc The Android Diopter Calculator]

==See Also==

* [[Astigmatism measurement]]

* [[Guide:How_to_measure_your_eyesight|How_to_measure_your_eyesight]]

* [[Guide: measuring with differentials| Guide to measuring with Differentials for high myopes]]

==References==
{{reflist}}
[[Category:Articles]]

Guide:How to measure your eyesight

2023-11-14T16:10:15Z

Lloydmom:

Measuring your eyesight can be done in several different ways. Remember eyesight fluctuates from day to day based on many factors, one measurement alone is not necessarily the most accurate indication of your vision. Before you order new correction, or decide to reduce, try to get enough measurements to have a good idea what your typical vision is. Since you are measuring yourself, you can take the time to get the best idea of what your most consistent vision trends are. You will gain the most complete understanding of your vision trends should you track all three measuring methods.

==Centimeter measurements==
Centimeter measurements are seeing your [[distance to blur]] with a tape measure held against a screen or book. 12 point font is recommended, you will see blur at the same distance regardless of font size, however it will be easier to distinguish the edge of blur with 12 pt font. Remember you are seeking the point where clarity is no longer sharp, '''not''' the edge of readability (though if you wish to notate this too in your records you certainly may).

[[Measurement tools|You can see various tools to accomplish this here.]]

This test can be used to check both near and far points, the difference between which determines [[presbyopia]].

==Eye chart==
A [[Snellen chart]] is good as it controls a lot of variables. If you stand at the '''same distance''' with the '''same given pair of glasses''' in '''similar, or same lighting''' and notice an improvement over time, then it's safe to say your eyesight is improving.

If you check your Snellen with your next, i.e. reduced pair of [[normalized]], and you can see the 20/50 line, you could start using those, provided you are reasonably comfortable with that much blur. But always keep your previous correction for driving, make sure you are being safe and within legal guidelines, check your local vision requirements. <ref>{{cite jake|https://endmyopia.org/2050-the-brilliant-super-simple-rule-for-improving-eyesight/}}</ref> Also note: the 20/50 standard is outdated and not actually recommended any longer, so please be aware of that fact should you choose to follow this.

Other static eye charts are possible, as well as the dynamic Dyop chart.

==Landmarks (real world objects)==
This usually works best with signs. Take a given object, preferably with text that you see very frequently and see whether there's an improvement over time in how well you can see the object.

This one might not produce hard figures like the other two methods, so it's better to use this in conjunction with the other the measuring methods and never as an exclusive means of assessing your vision, as it can be far too objective and you can not control important variables like lighting.

However if you are looking to have a tangible point of reference for this also, try this: [[Quick Reference: Real World Acuity Guide]]

==See Also==
* [[Measurement#Stay_calm | Measurements - Stay calm]]

* [[Guide:Measuring with differentials]]

==References==
{{reflist}}

[[Category:Guides]]

Guide:How to measure your eyesight

2023-11-14T15:53:58Z

Lloydmom: /* Landmarks (real world objects) */

Measuring your eyesight can be done in several different ways. Remember eyesight fluctuates from day to day based on many factors, one measurement alone is not necessarily the most accurate indication of your vision. Before you order new correction, or decide to reduce, try to get enough measurements to have a good idea what your typical vision is. Since you are measuring yourself you can take the time to get a better idea of what your most consistent vision is.

==Centimetre measurements==
Centimetre measurements are seeing your [[distance to blur]] with a tape measure held against a screen or book. 12 point font is recommended, you will see blur at the same distance regardless of font size, however it will be easier to distinguish the edge of blur with 12 pt font.

[[Measurement tools|You can see various tools to accomplish this here.]]

This test can be used to check both near and far points, the difference between which determines [[presbyopia]].

==Eye chart==
A [[Snellen chart]] is good as it controls a lot of variables. If you stand at the '''same distance''' with the '''same given pair of glasses''' in '''similar, or same lighting''' and notice an improvement over time, then it's safe to say your eyesight is improving.

If you check your Snellen with your next, i.e. reduced pair of [[normalized]], and you can see the 20/50 line, you could start using those, provided you are reasonably comfortable with that much blur. But always keep your previous correction for driving, make sure you are being safe and within legal guidelines, check your local vision requirements. <ref>{{cite jake|https://endmyopia.org/2050-the-brilliant-super-simple-rule-for-improving-eyesight/}}</ref>

Other static eye charts are possible, as well as the dynamic Dyop chart.

==Landmarks (real world objects)==
This usually works best with signs. Take a given object, preferably with text that you see very frequently and see whether there's an improvement over time in how well you can see the object.

This one might not produce hard figures like the other two methods, so it's better to use this exclusively only once you're sure you're getting improvements as verified by the other methods that produce numbers.

However if you are looking to have a tangible point of reference for this also, try this: [[Quick Reference: Real World Acuity Guide]]

==See Also==
* [[Measurement#Stay_calm | Measurements - Stay calm]]

* [[Guide:Measuring with differentials]]

==References==
{{reflist}}

[[Category:Guides]]

Quick Reference: Real World Acuity Guide

2023-11-14T13:21:59Z

Lloydmom:

There is a formula to discover what the acuity equivalent of any sized text is from a given distance, but for those who are a little busy juggling everything else in life and trying to work EndMyopia onto an already full plate, here is another tool for you. This real world acuity reference chart is designed to help you make the most of your EM walks by understanding what different size texts you can expect to see from various distances.
{| class="wikitable"
|+Imperial (American) Real World Acuity Chart
|
|1"
|2"
|3"
|4"
|5"
|6"
|8"
|10"
|12"
|-
|20/15
|76'
|153'
|229'
|306'
|386'
|458'
|611'
|764'
|917'
|-
|20/20
|57'
|115'
|172'
|229'
|286'
|344'
|458'
|573'
|688'
|-
|20/25
|46'
|92'
|138'
|183'
|229'
|275'
|367'
|458'
|550'
|-
|20/30
|38'
|76'
|115'
|153'
|191'
|229'
|306'
|382'
|458'
|-
|20/40
|29'
|57'
|86'
|115'
|143'
|172'
|229'
|286'
|344'
|-
|20/50
|23'
|46'
|69'
|92'
|115'
|138'
|183'
|229'
|275'
|}
Please note: you will see text size across the top notated as a number followed by " to indicate inches, and within the chart a number followed by ' to indicate feet from target.

Furthermore understand that this assumes good natural light. Lower light will require an adjustment in expectation as light plays a very important role in vision.

And for those of you who use the Metric System:
{| class="wikitable"
|+Metric Real World Acuity Chart
|
|25mm
|50mm
|75mm
|100mm
|125mm
|150mm
|200mm
|250mm
|300mm
|-
|6/5 (20/15)
|21m
|41m
|62m
|83m
|103m
|124m
|165m
|206m
|248m
|-
|6/6 (20/20)
|17m
|34m
|52m
|69m
|86m
|103m
|138m
|172m
|206m
|-
|6/9 (20/30)
|11m
|23m
|34m
|46m
|57m
|69m
|92m
|115m
|138m
|-
|6/12 (20/40)
|9m
|17m
|26m
|34m
|43m
|52m
|69m
|86m
|103m
|-
|6/15 (20/50)
|7m
|14m
|21m
|28m
|34m
|41m
|55m
|69m
|83m
|}
For those interested: The formula for getting the distance in feet, and having the font height in inch:

<code>Distance[feet] = (20 * letter size[inch]) / (0.01745 * row number)</code>

And for those of you who use the Metric System: same formula with meter for distance and mm for font height:

<code>Distance[meter] = (6 * letter size[mm]) / (1.45444 * row number)</code>

LASIK

2023-11-04T16:34:03Z

Lloydmom:

'''LASIK''' surgery, and similar procedures, are a [[refractive state]] "correction" done on the surface of the [[cornea]]. A laser is used to cut open the surface layer of the eye, and then parts of the cornea are removed to change it's shape. These changes are irreversible. LASIK does '''NOT''' reduce your risks of eye diseases associated with [[Myopia]], you still have long eyeballs and the associated issues with fluid pressure in your eye. LASIK does '''NOT''' resolve the cause of myopia and therefore does not ensure you will not need correction again in the future. LASIK does increase your risk of getting [[cataracts]], which requires lens replacement surgery, which has its own elevated risk factors (such as [https://en.wikipedia.org/wiki/Retinal_detachment ''Retinal Detachment'']). As well as carrying risk of other complications that vary in severity and are also irreversible..

== Complications ==

Although many people getting the surgery are happy with it, there are some serious long term complications. Talk to your [[optometrist]] if you have complications from LASIK such as [[dry eye]], halos and /or [[floaters]]. Unfortunately, LASIK complications are irreversible. Risk of infection is also a consideration. In rare cases, LASIK complications have led to severe [[depression]] and suicide.

== I already had LASIK ==
LASIK does '''not''' stop myopia progression. If you have had LASIK surgery you can use [[EndMyopia]] methods to stop progression or try to reverse your progression back to your post-surgical state.
== Reviews ==

[[Category:Articles]]

==References==
https://www.youtube.com/watch?v=M-5pATbLQcg&t=337s, https://www.youtube.com/watch?v=Jvn-FNEp83s, https://www.youtube.com/watch?v=Pij3dhYrHQk, https://www.youtube.com/watch?v=BPyO4K7fcks

https://lasiksuicides.com/evidence/dr-morris-waxler

https://lasikcomplications.com/?fbclid=IwAR1hT5mwcpODmnpOfyYSelM4YfngW7bkd1_LVEpqdY2TT1aYuEULcGHezyE

Quick Reference: Real World Acuity Guide

2023-11-02T12:49:36Z

Lloydmom:

There is a formula to discover what the acuity equivalent of any sized text is from a given distance, but for those who are a little busy juggling everything else in life and trying to work EndMyopia onto an already full plate, here is another tool for you. This real world acuity reference chart is designed to help you make the most of your EM walks by understanding what different size texts you can expect to see from various distances.
{| class="wikitable"
|+Americanized Real World Acuity Chart
|
|1"
|2"
|3"
|4"
|5"
|6"
|8"
|10"
|12"
|-
|20/15
|43'
|86'
|129'
|172'
|215'
|258'
|344'
|430'
|516'
|-
|20/20
|57'
|115'
|172'
|229'
|286'
|344'
|458'
|573'
|688'
|-
|20/25
|72'
|143'
|215'
|286'
|358'
|430'
|573'
|716'
|859'
|-
|20/30
|86'
|172'
|258'
|344'
|430'
|516'
|688'
|859'
|1031'
|-
|20/40
|115'
|229'
|344'
|458'
|573'
|688'
|917'
|1146'
|1375'
|-
|20/50
|143'
|286'
|430'
|573'
|716'
|859'
|1146'
|1432'
|1719'
|}
Please note: you will see text size across the top notated as a number followed by " to indicate inches, and within the chart a number followed by ' to indicate feet from target.

Furthermore understand that this assumes good natural light. Lower light will require an adjustment in expectation as light plays a very important role in vision.

And for those of you who use the Metric System:
{| class="wikitable"
|+Metric Real World Acuity Chart
|
|25mm
|50mm
|75mm
|100mm
|125mm
|150mm
|200mm
|250mm
|300mm
|-
|6/5 (20/15)
|14m
|29m
|43m
|57m
|72m
|86m
|115m
|143m
|172m
|-
|6/6 (20/20)
|17m
|34m
|52m
|69m
|86m
|103m
|138m
|172m
|206m
|-
|6/9 (20/30)
|26m
|52m
|77m
|103m
|129m
|155m
|206m
|258m
|309m
|-
|6/12 (20/40)
|34m
|69m
|103m
|138m
|172m
|206m
|275m
|344m
|413m
|-
|6/15 (20/50)
|43m
|86m
|129m
|172m
|215m
|258m
|344m
|430m
|516m
|}
For those interested: The formula for getting the distance in feet, and having the font height in inch:

<code>Distance[feet] = (20 * letter size[inch]) / (0.01745 * row number)</code>

And for those of you who use the Metric System: same formula with meter for distance and mm for font height:

<code>Distance[meter] = (6 * letter size[mm]) / (1.45444 * row number)</code>

Quick Reference: Real World Acuity Guide

2023-11-02T12:48:51Z

Lloydmom:

There is a formula to discover what the acuity equivalent of any sized text is from a given distance, but for those who are a little busy juggling everything else in life and trying to work EndMyopia onto an already full plate, here is another tool for you. This real world acuity reference chart is designed to help you make the most of your EM walks by understanding what different size texts you can expect to see from various distances.
{| class="wikitable"
|+Americanized Real World Acuity Chart
|
|1"
|2"
|3"
|4"
|5"
|6"
|8"
|10"
|12"
|-
|20/15
|43'
|86'
|129'
|172'
|215'
|258'
|344'
|430'
|516'
|-
|20/20
|57'
|115'
|172'
|229'
|286'
|344'
|458'
|573'
|688'
|-
|20/25
|72'
|143'
|215'
|286'
|358'
|430'
|573'
|716'
|859'
|-
|20/30
|86'
|172'
|258'
|344'
|430'
|516'
|688'
|859'
|1031'
|-
|20/40
|115'
|229'
|344'
|458'
|573'
|688'
|917'
|1146'
|1375'
|-
|20/50
|143'
|286'
|430'
|573'
|716'
|859'
|1146'
|1432'
|1719'
|}
Please note: you will see text size across the top notated as a number followed by " to indicate inches, and within the chart a number followed by ' to indicate feet from target.

Furthermore understand that this assumes good natural light. Lower light will require an adjustment in expectation as light plays a very important role in vision.

And for those of you who use the Metric System:
{| class="wikitable"
|+Metric Real World Acuity Chart
|
|25mm
|50mm
|75mm
|100mm
|125mm
|150mm
|200mm
|250mm
|300mm
|-
|6/5 (20/15)
|14m
|29m
|43m
|57m
|72m
|86m
|115m
|143m
|172m
|-
|6/6 (20/20)
|17m
|34m
|52m
|69m
|86m
|103m
|138m
|172m
|206m
|-
|6/9 (20/30)
|26m
|52m
|77m
|103m
|129m
|155m
|206m
|258m
|309m
|-
|6/12 (20/40)
|34m
|69m
|103m
|138m
|172m
|206m
|275m
|344m
|413m
|-
|6/15 (20/50)
|43m
|86m
|129m
|172m
|215m
|258m
|344m
|430m
|516m
|}
For those interested: The formula for getting the distance in feet, and having the font height in inch:
<code>Distance[feet] = (20 * letter size[inch]) / (0.01745 * row number)</code>

And for those of you who use the Metric System: same formula with meter for distance and mm for font height:
<code>Distance[meter] = (6 * letter size[mm]) / (1.45444 * row number)</code>

Quick Reference: Real World Acuity Guide

2023-11-02T12:47:55Z

Lloydmom:

There is a formula to discover what the acuity equivalent of any sized text is from a given distance, but for those who are a little busy juggling everything else in life and trying to work EndMyopia onto an already full plate, here is another tool for you. This real world acuity reference chart is designed to help you make the most of your EM walks by understanding what different size texts you can expect to see from various distances.
{| class="wikitable"
|+Americanized Real World Acuity Chart
|
|1"
|2"
|3"
|4"
|5"
|6"
|8"
|10"
|12"
|-
|20/15
|43'
|86'
|129'
|172'
|215'
|258'
|344'
|430'
|516'
|-
|20/20
|57'
|115'
|172'
|229'
|286'
|344'
|458'
|573'
|688'
|-
|20/25
|72'
|143'
|215'
|286'
|358'
|430'
|573'
|716'
|859'
|-
|20/30
|86'
|172'
|258'
|344'
|430'
|516'
|688'
|859'
|1031'
|-
|20/40
|115'
|229'
|344'
|458'
|573'
|688'
|917'
|1146'
|1375'
|-
|20/50
|143'
|286'
|430'
|573'
|716'
|859'
|1146'
|1432'
|1719'
|}
Please note: you will see text size across the top notated as a number followed by " to indicate inches, and within the chart a number followed by ' to indicate feet from target.

Furthermore understand that this assumes good natural light. Lower light will require an adjustment in expectation as light plays a very important role in vision.

And for those of you who use the Metric System:
{| class="wikitable"
|+Metric Real World Acuity Chart
|
|25mm
|50mm
|75mm
|100mm
|125mm
|150mm
|200mm
|250mm
|300mm
|-
|6/5 (20/15)
|14m
|29m
|43m
|57m
|72m
|86m
|115m
|143m
|172m
|-
|6/6 (20/20)
|17m
|34m
|52m
|69m
|86m
|103m
|138m
|172m
|206m
|-
|6/9 (20/30)
|26m
|52m
|77m
|103m
|129m
|155m
|206m
|258m
|309m
|-
|6/12 (20/40)
|34m
|69m
|103m
|138m
|172m
|206m
|275m
|344m
|413m
|-
|6/15 (20/50)
|43m
|86m
|129m
|172m
|215m
|258m
|344m
|430m
|516m
|}
For those interested: The formula for getting the distance in feet, and having the font height in inch:
<code>Distance[feet] = (20 * letter size[inch]) / (0.01745 * row number)</code>And for those of you who use the Metric System: same formula with meter for distance and mm for font height:
<code>Distance[meter] = (6 * letter size[mm]) / (1.45444 * row number)</code>

Quick Reference: Real World Acuity Guide

2023-11-02T12:23:37Z

Lloydmom:

There is a formula to discover what the acuity equivalent of any sized text is from a given distance, but for those who are a little busy juggling everything else in life and trying to work EndMyopia onto an already full plate, here is another tool for you. This real world acuity reference chart is designed to help you make the most of your EM walks by understanding what different size texts you can expect to see from various distances.
{| class="wikitable"
|+
|
|1"
|2"
|3"
|4"
|5"
|6"
|8"
|10"
|12"
|-
|20/15
|43'
|86'
|129'
|172'
|215'
|258'
|344'
|430'
|516'
|-
|20/20
|57'
|115'
|172'
|229'
|286'
|344'
|458'
|573'
|688'
|-
|20/25
|72'
|143'
|215'
|286'
|358'
|430'
|573'
|716'
|859'
|-
|20/30
|86'
|172'
|258'
|344'
|430'
|516'
|688'
|859'
|1031'
|-
|20/40
|115'
|229'
|344'
|458'
|573'
|688'
|917'
|1146'
|1375'
|-
|20/50
|143'
|286'
|430'
|573'
|716'
|859'
|1146'
|1432'
|1719'
|}
Please note: you will see text size across the top notated as a number followed by " to indicate inches, and within the chart a number followed by ' to indicate feet from target. Furthermore understand that this assumes good natural light. Lower light will require an adjustment in expectation as light plays a very important role in vision.

And for those of you who use the Metric System:
{| class="wikitable"
|+Metric Real World Acuity Chart
|
|25mm
|50mm
|75mm
|100mm
|125mm
|150mm
|200mm
|250mm
|300mm
|-
|6/5 (20/15)
|14m
|29m
|43m
|57m
|72m
|86m
|115m
|143m
|172m
|-
|6/6 (20/20)
|17m
|34m
|52m
|69m
|86m
|103m
|138m
|172m
|206m
|-
|6/9 (20/30)
|26m
|52m
|77m
|103m
|129m
|155m
|206m
|258m
|309m
|-
|6/12 (20/40)
|34m
|69m
|103m
|138m
|172m
|206m
|275m
|344m
|413m
|-
|6/15 (20/50)
|43m
|86m
|129m
|172m
|215m
|258m
|344m
|430m
|516m
|}

Quick Reference: Real World Acuity Guide

2023-11-02T12:19:03Z

Lloydmom: Added metric table

There is a formula to discover what the acuity equivalent of any sized text is from a given distance, but for those who are a little busy juggling everything else in life and trying to work EndMyopia onto an already full plate, here is another tool for you. This real world acuity reference chart is designed to help you make the most of your EM walks by understanding what different size texts you can expect to see from various distances.
{| class="wikitable"
|+
|
|1"
|2"
|3"
|4"
|5"
|6"
|8"
|10"
|12"
|-
|20/15
|43'
|86'
|129'
|172'
|215'
|258'
|344'
|430'
|516'
|-
|20/20
|57'
|115'
|172'
|229'
|286'
|344'
|458'
|573'
|688'
|-
|20/25
|72'
|143'
|215'
|286'
|358'
|430'
|573'
|716'
|859'
|-
|20/30
|86'
|172'
|258'
|344'
|430'
|516'
|688'
|859'
|1031'
|-
|20/40
|115'
|229'
|344'
|458'
|573'
|688'
|917'
|1146'
|1375'
|-
|20/50
|143'
|286'
|430'
|573'
|716'
|859'
|1146'
|1432'
|1719'
|}
Please note: you will see text size across the top notated as a number followed by " to indicate inches, and within the chart a number followed by ' to indicate feet from target. Furthermore understand that this assumes good natural light. Lower light will require an adjustment in expectation as light plays a very important role in vision.

And for those of you who use the Metric System:
{| class="wikitable"
|+Metric Real World Acuity Chart
!
!25mm
!50mm
!75mm
!100mm
!125mm
!150mm
!200mm
!250mm
!300mm
|-
!6/5 (20/15)
!14m
!29m
!43m
!57m
!72m
!86m
!115m
!143m
!172m
|-
!6/6 (20/20)
!17m
!34m
!52m
!69m
!86m
!103m
!138m
!172m
!206m
|-
|6/9 (20/30)
|26m
|52m
|77m
|103m
|129m
|155m
|206m
|258m
|309m
|-
|6/12 (20/40)
|34m
|69m
|103m
|138m
|172m
|206m
|275m
|344m
|413m
|-
|6/15 (20/50)
|43m
|86m
|129m
|172m
|215m
|258m
|344m
|430m
|516m
|}

Quick Reference: Real World Acuity Guide

2023-11-01T18:45:34Z

Lloydmom:

Quick Reference: Real World Acuity Guide

2023-11-01T18:41:55Z

Lloydmom:

Quick Reference: Real World Acuity Guide

2023-11-01T18:32:32Z

Lloydmom: Added content

Writing:I am a student, Help

2023-08-11T21:12:04Z

Lloydmom:

{{Writing|author=Lloydmom}}


==The student's most asked question==

One very commonly raised concern is that of students. It is always the same concern: "Which correction do I use in class?" While the phrasing varies from one query to the next, the question is essentially the same.

==The scenario==
When you are in class (or the boardroom for that matter), you are trying to take notes (close up) and you need to see the board during the lecture (distance). The conclusion people arrive at is that in order to apply the EndMyopia method one must switch between [[Differentials]] and [[Normalized]] many times. Naturally the idea is unappealing. Not only will you attract unwanted attention, your productivity will suffer from the distraction, and you will likely end up with a headache and/or a pair of unhappy eyes from the frequent changing.

==What to do==
It is important to understand that Differentials are for extended close work. Taking notes in class is not extended close work. The most practical thing to do here is to wear your normalized. Looking down for a quick jot is not going to do any real damage to your progress with EM. Don't mistake this for a pass to use normz on your phone "just for a second", this should always be a exception to the rule, based on the obligation of your work.

Another option, depending on your diopter dependence, is to peek under your glasses when taking notes. If you follow the EM suggestion for larger frames then it might be helpful to have a smaller frame specifically for classroom use.
==Take heed==
If you start extending this exception beyond the obligation of the classroom (boardroom) you will likely find it hinders your progress.

It is of course important to switch to Differentials (or glasses off if that applies to you) to study and for all of your extended close up, and avoid extra close up beyond what is required. As long as you mind this and you are good about getting distance vision to balance out your close work, there is no reason you will not progress just as well as anyone else.

*Please note: It is '''NOT''' in accordance with EM recommendations to use bifocal or multifocal lenses. However if you feel strongly this might be something to explore, [https://endmyopia.org/progressive-lenses-vs-bifocal-lenses/?fbclid=IwAR0XNDlwubSOvzwhZs0nL2ALgrCqevQJYz0OlNvUgZWHu6_xbBkfzV7qbQY here is what Jake has to say.]


[[Category:Project Starting EM]]

Writing:I am a student, Help

2023-08-11T21:10:17Z

Lloydmom: /* What to do */

{{Writing|author=Lloydmom}}


==The student's most asked question==

One very commonly raised concern is that of students. It is always the same concern: "Which correction do I use in class?" While the phrasing varies from one query to the next, the question is essentially the same.

==The scenario==
When you are in class (or the boardroom for that matter), you are trying to take notes (close up) and you need to see the board during the lecture (distance). The conclusion people arrive at is that in order to apply the EndMyopia method one must switch between [[Differentials]] and [[Normalized]] many times. Naturally the idea is unappealing. Not only will you attract unwanted attention, your productivity will suffer from the distraction, and you will likely end up with a headache and/or a pair of unhappy eyes from the frequent changing.

==What to do==
It is important to understand that Differentials are for extended close work. Taking notes in class is not extended close work. The most practical thing to do here is to wear your normalized. Looking down for a quick jot is not going to do any real damage to your progress with EM. Don't mistake this for a pass to use normz on your phone "just for a second", this should always be a exception to the rule, based on the obligation of your work.

Another option, depending on your diopter dependence, is to peek under your glasses when taking notes. If you follow the EM suggestion for larger frames then it might be helpful to have a smaller frame specifically for classroom use.
*Please note: It is '''NOT''' in accordance with EM recommendations to use bifocal or multifocal lenses. However if you feel strongly this might be something to explore, [https://endmyopia.org/progressive-lenses-vs-bifocal-lenses/?fbclid=IwAR0XNDlwubSOvzwhZs0nL2ALgrCqevQJYz0OlNvUgZWHu6_xbBkfzV7qbQY here is what Jake has to say.]

==Take heed==
If you start extending this exception beyond the obligation of the classroom (boardroom) you will likely find it hinders your progress.

It is of course important to switch to Differentials (or glasses off if that applies to you) to study and for all of your extended close up, and avoid extra close up beyond what is required. As long as you mind this and you are good about getting distance vision to balance out your close work, there is no reason you will not progress just as well as anyone else.


[[Category:Project Starting EM]]

Writing:I am a student, Help

2023-08-01T12:05:54Z

Lloydmom: /* What to do */

{{Writing|author=Lloydmom}}


==The student's most asked question==

One very commonly raised concern is that of students. It is always the same concern: "Which correction do I use in class?" While the phrasing varies from one query to the next, the question is essentially the same.

==The scenario==
When you are in class (or the boardroom for that matter), you are trying to take notes (close up) and you need to see the board during the lecture (distance). The conclusion people arrive at is that in order to apply the EndMyopia method one must switch between [[Differentials]] and [[Normalized]] many times. Naturally the idea is unappealing. Not only will you attract unwanted attention, your productivity will suffer from the distraction, and you will likely end up with a headache and/or a pair of unhappy eyes from the frequent changing.

==What to do==
It is important to understand that Differentials are for extended close work. Taking notes in class is not extended close work. The most practical thing to do here is to wear your normalized. Looking down for a quick jot is not going to do any real damage to your progress with EM. Don't mistake this for a pass to use normz on your phone "just for a second", this should always be a exception to the rule, based on the obligation of your work.

Another option, depending on your diopter dependence, is to peek under your glasses when taking notes. If you follow the EM suggestion for larger frames then it might be helpful to have a smaller frame specifically for classroom use.
*Please note: It is '''NOT''' in accordance with EM recommendations to use bifocal or multifocal lenses.

==Take heed==
If you start extending this exception beyond the obligation of the classroom (boardroom) you will likely find it hinders your progress.

It is of course important to switch to Differentials (or glasses off if that applies to you) to study and for all of your extended close up, and avoid extra close up beyond what is required. As long as you mind this and you are good about getting distance vision to balance out your close work, there is no reason you will not progress just as well as anyone else.


[[Category:Project Starting EM]]

Child Myopia

2023-01-18T21:02:51Z

Lloydmom: /* References */

==Introduction==
All parents approaching EndMyopia for their children, come with a sense of urgency. Please understand this is not a good approach. You need to be calm and rational in order to make good choices for your child. Remember '''myopia is NOT a medical condition''', it is a [[refractive state]]. If your child had good vision before, they should be able to have it again. If your child does have a medical condition there might be limitations to how much this method will help, however the practices are worthwhile applications for their future vision just the same. Ideally, a myopic adult would start with EndMyopia then help a child. It is very important that an adult who fully understands the method and what vision improvement requires works with the child in question.

==Please Note==
It might be helpful to consider that myopia control and reversal is less like potty training (go hard for a few weeks and it's typically done with) and more like getting them to pick up after themselves (every parent knows this is a long haul lesson). Small changes over time will be a good approach.

==Getting Started==
Most parents new to the method have the first instinct to take away their child's correction and take away most of, if not all of, their favorite close-up activities.

Let's start with the desire to take away correction. Don't. If your child was just told they need glasses and they have never worn them before by all means hold off on introducing correction, you might even find with new [[habits]] they won't need correction, as long as you are working on their vision, it is not harmful to not rush into correction. But, if a child is already wearing correction they can't just stop. They need to learn to wear the correction only when needed and should never wear their full correction for near work. If their correction is stronger than -2 they will likely require [[differentials]] for near work. Ideally it is best to provide the correction for a greater distance than to have your child looking at things closer in order to eliminate that need for correction; because the closer they are to the object of focus the more strain there is on the eye. Always the goal should be to maximize their distance when in a situation of static viewing; such as reading, playing video games and computer work. The worst danger zone is under 50cms, as you can quickly surmise this includes basically everything within arms reach for children. In actual application especially in school it might be difficult to introduce differentials, if your child is content to remove their glasses and is confident they can see well enough doing so for near work, this is most likely easier than having them switch throughout the school day. Remind them to be mindful of switching focus to prevent [[ciliary spasm]]. For those who cannot remove their correction but are still unlikely to switch correction in school it is even more important to have those good habits as well as a [[normalized]] correction that is only just sufficient to see the board to help minimize [[hyperopic defocus]]. Bifocals and multifocal lenses are not generally indicated, a bit on that [https://endmyopia.org/progressive-lenses-good-myopia-rehab/ from Jake here].

Now on to that other reflex reaction. If you take away all of your child's favorite and accustomed activities, they are not going to see your love for them in it. They are most likely going to hate the sudden onset of restrictions and feel like they are being punished for being myopic. While this is clearly not your intent, this is almost certainly how they will feel. Try to make gradual changes. Reducing time in extreme and static close up needs to be a priority; so anytime you can shift phone and/or tablet activities to a tv at a greater distance this will be progress. Many parents also use book stands to help increase and encourage consistent reading distance. Introduce the [[20-20-20 rule]] during close up right away, and as soon as possible [[differentials]] if/as needed for static close up. It is a good idea to start reducing the close work time itself where possible, but again keeping in mind how important it is that your child doesn't feel penalized for their myopia.

One thing that might help with the 20-20-20 rule is a "stretch buddy" place an object (favorite toy perhaps) at a distance from your child during close up and encourage them to "stretch their eyes" to see the object at regular intervals, picking out details on it as much as possible. Don't worry overmuch about activities like Legos and Play-doh, 3-D objects and activities tend to have a lot of shifting focus, these activities are not particularly harmful, provided there is good lighting and your child gets good distance vision as well. It is static vision that is the primary concern.

==Measuring==
Getting your child to look at a [[Snellen Chart]] is probably best saved primarily for measurements, and for younger children there are kid friendly snellen charts that will probably prove more engaging. It is a good idea to have several charts, it is easy to memorize a frequently used chart, so rotate often for more accurate testing. You will of course want to do centimeter [[measurement]]s as well. Try to keep measuring light and fun, causing yourself or your child stress with measuring is not going to be beneficial for anyone. Jake does recommend hanging a snellen chart in the home; however for children it is probably a good idea to have well placed text stimulus beyond that, keeping some novelty to the snellen chart might well help your child engage more when you are doing measurements.

==Active Focus==
Children have a hard time grasping [[active focus]] but encouraging them to engage with their vision through play is easy to do, when you can get them to do this outside, even better. Some ideas here: [https://wiki.endmyopia.org/wiki/Focus_Games_for_Kids focus games]. It is important to discourage squinting and blinking unnaturally hard in order to clear blur. These are both bad habits to form and difficult to break. If you have a fairly good handle on active focus, your child is a little older and feel you can convey active focus to your child on their level by all means do so. However for the most part children are going to be more inclined to clear blur when it is part of an activity, rather than the clearing of blur being the activity alone.

==Prioritize Stabilization==
While it is understandable that you want to reverse your child's myopia quickly, take into account that it is quite likely that their eyes are currently getting worse. Stopping that progression is the first big step, and even if that is all you manage, that is a win. Correct use of correction for a given task, time outdoors engaging with distance vision, and good near work habits are typically enough to accomplish this goal.

Your child may or may not choose to reverse their myopia, and hard as it is for a parent to accept, that is their choice. But enabling them to stop its progression and giving them the option to reverse it, now that you know it is possible, is an advantage that most people don't have; children and adults alike.

==Important==
'''Please don't make any changes to your child's correction until you can make an informed decision'''. Communicate with your child about their vision, even preschool aged children can relay their own feedback. Marching your child to the optometrist every 6 months is going to be a point of stress and is wholly unnecessary, do your own measurements, and keep it light. Keep in mind how you would deal with your child concerning any other matter. Don't forget you are building better vision habits for life, there is no need to frustrate yourself or your child by pushing for fast changes and results. Remember this is not a medical condition, certainly don't neglect it, but this is more of a marathon than a sprint, so slow and steady is the way to go.

==See Also==
[https://wiki.endmyopia.org/wiki/Guide:My_Child_Has_Myopia Guide for child myopia]

[https://wiki.endmyopia.org/wiki/Focus_Games_for_Kids Focus games for kids]

[https://endmyopia.org/help-i-need-to-fix-my-childs-eyes-fast/?fbclid=IwAR07-YkAVQkUztoC_l3Fjd4CUCvkug6f6K3gm2xsQeGjgyKF2pZmCKoM04w Jake's take on looking for the quick fix to Child Myopia]

==References==

Videos by Jake: https://endmyopia.org/young-child-glasses-one-focal-plane/?fbclid=IwAR248tHeLLJ4owkJXrTocuOK_SPs4rXyBk4LOAOmP1ki2z7coxYATJ_mlB8

https://www.youtube.com/watch?v=XxOYG8weq8Y

Full playlist for Child Nearsightedness: https://www.youtube.com/playlist?list=PLgB_5pbB86Giioahj-P0PBHlervYKStyp

The EndMyopia Blog:

[https://endmyopia.org/child-myopia-prescription-strategies/ Child myopia diopter strategies]

[https://endmyopia.org/active-focus-the-key-to-reversing-myopia/ Child active focus]

[https://endmyopia.org/?s=childhood+myopia Child myopia 1]

[https://endmyopia.org/category/child-myopia-2 Child myopia 2]

[https://endmyopia.org/active-focus-games-for-your-children/ Active Focus games for kids]

==A Final Note==
Obviously, there is the whole rest of the method to add to this, and if you need more help Jake has an add-on to the adult [[BackTo20/20]] program.

20-20-20 rule

2023-01-10T13:22:50Z

Lloydmom: /* One more thing */

The 20-20-20 rule is designed to be an easy to remember caution about doing too much [[near work]] and to give your eyes a break from [[eye strain]] regularly. This rule is supported by conventional optometry<ref name="American Optometric Association 20-20-20 rule poster">{{Cite web |title=American Optometric Association 20-20-20 rule poster |date=2020-05-30 |website=American Optometric Association |url=https://www.aoa.org/documents/infographics/SYVM2016Infographics.pdf |access-date=2020-05-30}}</ref><ref name="Medical News Today: Does the 20-20-20 rule prevent eye strain?">{{Cite web |title=20-20-20 rule: How to prevent eye strain |url=https://www.medicalnewstoday.com/articles/321536 |last=Nall |first=Rachel |date=2020-05-30 |website=www.medicalnewstoday.com |language=en |access-date=2020-05-30}}</ref> and is a start towards the EM method.

* Every 20 minutes
* Look at something 20 feet away (6 meters)
* For at least 20 Seconds</big>
==Go Beyond 20-20-20==
EM finds that short breaks are less effective and recommends that you '''take longer breaks''', possibly less frequently to compensate for the longer duration.
* After you do close-up for 20 minutes continuously, take a 5 minute break.<ref>{{Cite web |title=Eye Strain Awareness: Prevent Pseudo Myopia - Endmyopia |url=https://endmyopia.org/breaks-are-key-to-build-eye-strain-awareness/ |last=Steiner |first=Jake |website=endmyopia.org |access-date=2020-06-01}}</ref>
* After you do close-up for 3 hours continuously, take the longest break you can (like an hour) ([[3 hour rule]])<ref>[https://endmyopia.org/how-to-improve-eyesight-five-steps/ How To Improve Your Eyesight: Just 5 Steps]</ref>
* Take your break outside. <ref>[https://endmyopia.org/must-read-going-outside-to-improve-your-eyesight/ Must Read: Going Outside To Improve Your Eyesight]</ref> Notice how the lower frequency (3 hours instead of 20 minutes) is balanced by the increased duration (1 hour vs 5 minutes).
* To develop [[Strain Awareness]], it is recommended to use frequent short breaks and shift towards less frequent, longer breaks if preferred.
* You can customize your break schedule to your needs.

==One more thing==
The most commonly asked question about the 20-20-20 rule is: "Do I need to switch back to [[normalized]] every time I shift focus, for a break?"

The answer is: whatever you wish. However, it would make your life easier if you kept the [[focal plane]] you are already using, be it [[differentials]] or nothing depending on where you are in your journey, for breaks under 5 minutes. If you are taking a much recommended longer break; this is a good time to switch to [[normalized]], in order to ensure you are not trading close up strain for excessive blur strain.

==Reverse 20-20-20 rule==

Which glasses should you wear if you don't want to change your glasses all the time?

At least two people in the Discord chat have the following personal rule: If you will be in blur for more than 20 minutes, change to your other pair of glasses.

==Do you need the 20-20-20 rule?==

{{quote|The 202020202002020202 rule isn’t ours / mine / endmyopia. I think it’s kind of pointless but I :zipper_mouth_face: when people bring it up since … :man_shrugging:<ref>https://community.endmyopia.org/t/nottnott-fixes-his-eyesight-from-5-video-log/5361/1189</ref>|Jake Steiner}}

{{quote|20202020202020202020000 rule is really just mainstream articles filtering into here. When you get distance vision your ciliary unlocks anyway. Whether [[ciliary spasm]] shuts off axial gains is debatable, light rays still converge in front of eye in theory. Try without 202020 rule and see if you still make the gains.<ref>https://community.endmyopia.org/t/ok-but-when-exactly/16092/2</ref>|NottNott}}
{{quote|It was never an Endmyopia rule, it’s a mainstream optometrists / work ergonomics recommendation.

Jake generally recommends longer breaks. He says that a break needs to be at least 10-15 minutes to be really effective.
He also recommends to have 1 hour break after every 3 hours of close-up.

But these are not strict rules. Generally what matters if you get ciliary spasm during your close-up or not. The best way to make sure is to check a Snellen chart or some “landmark” before you do close-up. You should be able to maintain the same acuity during close-up. If you detect blur on the same Snellen chart / landmark, then you should take a break.

Edit: to avoid misunderstandings, the 20/20/20 doesn’t do any harm, but on it’s own is not enough to prevent or eliminate ciliary spasm.|halmadavid}}

{{quote|At EM we like to talk about "psuedomyopia" or whatever but the real danger is getting psuedoADHD induced by 20-20-20, as in you're actively choosing to train yourself to have a short attention span. "The rapid turnover of context." Check out [https://podcastnotes.org/huberman-lab/episode-37-adhd-how-anyone-can-improve-their-focus-huberman-lab/ Huberman Lab Podcast #37] At the 2:09:16 mark|AznDudeIsOn}}

==References==
{{Reflist}}

[[Category:Articles]]

Writing:I am a student, Help

2023-01-06T14:39:38Z

Lloydmom: /* The scenario */

{{Writing|author=Lloydmom}}


==The student's most asked question==

One very commonly raised concern is that of students. It is always the same concern: "Which correction do I use in class?" While the phrasing varies from one query to the next, the question is essentially the same.

==The scenario==
When you are in class (or the boardroom for that matter), you are trying to take notes (close up) and you need to see the board during the lecture (distance). The conclusion people arrive at is that in order to apply the EndMyopia method one must switch between [[Differentials]] and [[Normalized]] many times. Naturally the idea is unappealing. Not only will you attract unwanted attention, your productivity will suffer from the distraction, and you will likely end up with a headache and/or a pair of unhappy eyes from the frequent changing.

==What to do==
It is important to understand that Differentials are for extended close work. Taking notes in class is not extended close work. The most practical thing to do here is to wear your normalized. Looking down for a quick jot is not going to do any real damage to your progress with EM. Don't mistake this for a pass to use normz on your phone "just for a second", this should always be a exception to the rule, based on the obligation of your work.

Another option, depending on your diopter dependence, is to peek under your glasses when taking notes. If you follow the EM suggestion for larger frames then it might be helpful to have a smaller frame specifically for classroom use.
*Please note: It is '''not''' in accordance with EM recommendations to use bifocal or multifocal lenses.

==Take heed==
If you start extending this exception beyond the obligation of the classroom (boardroom) you will likely find it hinders your progress.

It is of course important to switch to Differentials to study and for all of your extended close up, and avoid extra close up beyond what is required. As long as you mind this and you are good about getting distance vision to balance out your close work, there is no reason you will not progress just as well as anyone else.


[[Category:Project Starting EM]]

Guide:Reducing normalized

2022-12-13T21:07:24Z

Lloydmom:

In general, you only want to reduce '''0.25 diopters from a full, 20/20 prescription'''. The 20/20 standard indicates that you can consistently read the 20 foot or 6 meter line (half or better correct) on the [[Snellen chart]] from that distance in reasonably good indoor lighting without [[active focus]]. If your set up only allows for a 10 foot or 3 meter chart keep in mind that this isn't quite as accurate, you can account for this by increasing your standard to a fairly clear 100 percent of the 20/20 line.

You would do well to wait for the non dominant eye to be at this standard as well, (see [[ocular dominance]]). Getting 20/20 once is not necessarily an indication you are ready to reduce, it could just be a good day. Reducing too early leads to unnecessary struggle with excessive blur and eye strain that might slow or even stop your progress. With that consideration, it is a good idea to make sure the 20/20 holds for at least a week if not 2 before reducing.

If you're experiencing any [[double vision]], it's recommended to wait until it clears up before reducing.

When introducing a [[normalized]] reduction you should perform a "[[zero diopter reset]]".
It is a good idea to keep the full correction (your previous normz) handy for night driving; at least for the first stretch of time in your new reduction.
== See also ==
* [[Guide:How to measure your eyesight | How to measure your eyesight]]
* [[reduction | Reduction]]

* [[Normalized]]

* [[Guide:Reducing lens complexity | Reducing lens complexity]]
* [[Guide:Reducing_differentials | Reducing differentials]]
* [[Guide:Not_reducing_too_quickly | Take it slow]]

==Blog==
[https://endmyopia.org/reducing-too-quickly-why-its-your-biggest-mistake/ Don't rush to reduce]

[[Category:Guides]]

Guide:Not reducing too quickly

2022-12-13T20:36:07Z

Lloydmom:

The temptation of every student of EndMyopia is to reduce their correction faster or more than their measurements justify. Or in many cases to cause their measurements to justify a [[reduction]] they have not actually yet earned, by using [[active focus]] when measuring. [[Visual acuity]] is not intended to be a measurement of your ability to active focus. Your true myopia value doesn't change until your vision actually improves. The amount of correction you're wearing is arbitrary rather you are .25 diopters under corrected or 2 diopters. The only difference being rather the correction you are wearing provides good stimulus or excessive strain and risk of [[blur adaptation]].

==Avoiding the too fast reduction trap==
The best ways to avoid falling into the trap of reducing too quickly or too much is to be sure you are measuring objectively and as accurately as possible. Many things affect our vision and if you only take into account the measurements achieved with the ideal settings (ex. outside in full sun, first thing in the morning) you will always reduce faster and/or more than you should. By all means note these measurements but also get measurements that are in less ideal conditions (ex. artificial lighting at the end of the day). If you are taking your full range of vision into account you are much more likely to set your correction at a middle point, to provide good stimulus without excessive blur in most settings. It is usually not a good idea to reduce until you are consistently measuring 20/20 indoors for about 2 weeks.

Also note that different aspects of your vision tend to be affected at different rates, it is not unusual to have your [[snellen chart]] results change at a different time than your cm measurements. Often your distance landmark (provided you have a proper text reference) will be the last thing to improve, as it is well outside the diopter bubble. Additionally your eyes will improve at a different rate in relation to each other. This is known as [[ocular dominance]] and it is important to be sure both eyes are ready to reduce or you will be putting your non dominant eye at a disadvantage in the new correction and this may result in opening a [[diopter gap]] that can and should be avoided.

The point will come in your [[reduction]] when all of your measurements reflect your improvement consistently in both eyes and then you know it is time to reduce.

==I already reduced==
If you already fell into the trap of reducing too quickly or too much, don't worry you are not alone. If you are still managing to improve, great! You got away with it this time; don't expect it to be a pattern though. More likely though you have stalled in progress and it is time to dial that correction up to where it belongs. Having a correction just .25 less than your full [[20/20 correction]] is the best way to provide good stimulus with resolvable blur that doesn't disrupt your day to day life. '''Going back up is not a step backwards''', once again your true myopia value is the same regardless of how under corrected you are. Increasing your correction gives your eyes the opportunity to achieve [[active focus]], without which you will not improve. Don't waste time and risk [[blur adaptation]] trying to "stick out" a correction that has too much blur, put that correction away (you will get back to it) and get into the right correction.

==See Also==

* [[Blur adaptation]]
* [[reduction | Reduction]]
* [[Guide:Reducing lens complexity | Reducing lens complexity]]
* [[Guide:Reducing_differentials | Reducing differentials]]
* [[Guide:Reducing normalized | Reducing normalized]]

==References==
What does Jake say about it? https://endmyopia.org/reducing-too-quickly-why-its-your-biggest-mistake/

More here: https://endmyopia.org/?s=reducing+too+quickly

[https://endmyopia.org/qa-can-reduce-1-2-diopter-get-moar-gains/ Can I Reduce More Diopters For More Gains?] (Spoiler, NO.)

Guide:Not reducing too quickly

2022-12-13T20:30:24Z

Lloydmom: /* References */

The temptation of every student of EndMyopia is to reduce their correction faster or more than their measurements justify. Or in many cases to cause their measurements to justify a reduction they have not actually yet earned, by using [[active focus]] when measuring. [[Visual acuity]] is not intended to be a measurement of your ability to active focus. Your true myopia value doesn't change until your vision actually improves. The amount of correction you're wearing is arbitrary rather you are .25 diopters under corrected or 2 diopters. The only difference being rather the correction you are wearing provides good stimulus or excessive strain and risk of [[blur adaptation]].

==Avoiding the too fast reduction trap==
The best ways to avoid falling into the trap of reducing too quickly or too much is to be sure you are measuring objectively and as accurately as possible. Many things affect our vision and if you only take into account the measurements achieved with the ideal settings (ex. outside in full sun, first thing in the morning) you will always reduce faster and/or more than you should. By all means note these measurements but also get measurements that are in less ideal conditions (ex. artificial lighting at the end of the day). If you are taking your full range of vision into account you are much more likely to set your correction at a middle point, to provide good stimulus without excessive blur in most settings. It is usually not a good idea to reduce until you are consistently measuring 20/20 indoors for about 2 weeks.

Also note that different aspects of your vision tend to be affected at different rates, it is not unusual to have your [[snellen chart]] results change at a different time than your cm measurements. Often your distance landmark (provided you have a proper text reference) will be the last thing to improve, as it is well outside the diopter bubble. Additionally your eyes will improve at a different rate in relation to each other. This is known as [[ocular dominance]] and it is important to be sure both eyes are ready to reduce or you will be putting your non dominant eye at a disadvantage in the new correction and this may result in opening a [[diopter gap]] that can and should be avoided.

The point will come in your reduction when all of your measurements reflect your improvement consistently in both eyes and then you know it is time to reduce.

==I already reduced==
If you already fell into the trap of reducing too quickly or too much, don't worry you are not alone. If you are still managing to improve, great! You got away with it this time; don't expect it to be a pattern though. More likely though you have stalled in progress and it is time to dial that correction up to where it belongs. Having a correction just .25 less than your full [[20/20 correction]] is the best way to provide good stimulus with resolvable blur that doesn't disrupt your day to day life. '''Going back up is not a step backwards''', once again your true myopia value is the same regardless of how under corrected you are. Increasing your correction gives your eyes the opportunity to achieve [[active focus]], without which you will not improve. Don't waste time and risk [[blur adaptation]] trying to "stick out" a correction that has too much blur, put that correction away (you will get back to it) and get into the right correction.

==See Also==

* [[Blur adaptation]]
* [[reduction | Reduction]]
* [[Guide:Reducing lens complexity | Reducing lens complexity]]
* [[Guide:Reducing_differentials | Reducing differentials]]
* [[Guide:Reducing normalized | Reducing normalized]]

==References==
What does Jake say about it? https://endmyopia.org/reducing-too-quickly-why-its-your-biggest-mistake/

More here: https://endmyopia.org/?s=reducing+too+quickly

[https://endmyopia.org/qa-can-reduce-1-2-diopter-get-moar-gains/ Can I Reduce More Diopters For More Gains?] (Spoiler, NO.)

Guide:Not reducing too quickly

2022-12-13T20:29:32Z

Lloydmom: /* See Also */

The temptation of every student of EndMyopia is to reduce their correction faster or more than their measurements justify. Or in many cases to cause their measurements to justify a reduction they have not actually yet earned, by using [[active focus]] when measuring. [[Visual acuity]] is not intended to be a measurement of your ability to active focus. Your true myopia value doesn't change until your vision actually improves. The amount of correction you're wearing is arbitrary rather you are .25 diopters under corrected or 2 diopters. The only difference being rather the correction you are wearing provides good stimulus or excessive strain and risk of [[blur adaptation]].

==Avoiding the too fast reduction trap==
The best ways to avoid falling into the trap of reducing too quickly or too much is to be sure you are measuring objectively and as accurately as possible. Many things affect our vision and if you only take into account the measurements achieved with the ideal settings (ex. outside in full sun, first thing in the morning) you will always reduce faster and/or more than you should. By all means note these measurements but also get measurements that are in less ideal conditions (ex. artificial lighting at the end of the day). If you are taking your full range of vision into account you are much more likely to set your correction at a middle point, to provide good stimulus without excessive blur in most settings. It is usually not a good idea to reduce until you are consistently measuring 20/20 indoors for about 2 weeks.

Also note that different aspects of your vision tend to be affected at different rates, it is not unusual to have your [[snellen chart]] results change at a different time than your cm measurements. Often your distance landmark (provided you have a proper text reference) will be the last thing to improve, as it is well outside the diopter bubble. Additionally your eyes will improve at a different rate in relation to each other. This is known as [[ocular dominance]] and it is important to be sure both eyes are ready to reduce or you will be putting your non dominant eye at a disadvantage in the new correction and this may result in opening a [[diopter gap]] that can and should be avoided.

The point will come in your reduction when all of your measurements reflect your improvement consistently in both eyes and then you know it is time to reduce.

==I already reduced==
If you already fell into the trap of reducing too quickly or too much, don't worry you are not alone. If you are still managing to improve, great! You got away with it this time; don't expect it to be a pattern though. More likely though you have stalled in progress and it is time to dial that correction up to where it belongs. Having a correction just .25 less than your full [[20/20 correction]] is the best way to provide good stimulus with resolvable blur that doesn't disrupt your day to day life. '''Going back up is not a step backwards''', once again your true myopia value is the same regardless of how under corrected you are. Increasing your correction gives your eyes the opportunity to achieve [[active focus]], without which you will not improve. Don't waste time and risk [[blur adaptation]] trying to "stick out" a correction that has too much blur, put that correction away (you will get back to it) and get into the right correction.

==See Also==

* [[Blur adaptation]]
* [[reduction | Reduction]]
* [[Guide:Reducing lens complexity | Reducing lens complexity]]
* [[Guide:Reducing_differentials | Reducing differentials]]
* [[Guide:Reducing normalized | Reducing normalized]]

==References==
What does Jake say about it? https://endmyopia.org/reducing-too-quickly-why-its-your-biggest-mistake/

More here: https://endmyopia.org/?s=reducing+too+quickly

Reduction

2022-12-13T20:21:44Z

Lloydmom: /* Blog */

Your [[Normalized]] and [[Differentials]] [[Lenses]] power should steadily reduce in power over time. (+0.25 for myopes, -0.25 for hyperopes, moving towards 0)

Generally, the [[correction]] should be a quarter diopter weaker than needed to see clearly, which provides a slight [[blur]] stimulus for change, although trading 0.5 cyl for 0.25 [[spherical equivalent|sph equivalent]] is also possible.

==When to reduce==
As your eyes improve, you will need to reduce again to maintain that slight blur. These reductions typically occur every 3-4 months for sphere and at least 6 months for cylinder. Alternate between differentials and normalized with 4-6 weeks of adjustment period between changes to your focal plane. Do not reduce your sphere and cylinder at the same time. It is important to be sure you are ready to reduce and that your measurements justify reduction. Reducing too soon is never a good idea (see [[blur adaptation]]). Ideally, you should be consistently (for a week or two) seeing 20/20 in your current correction, indoors, with reasonably good lighting, on a 20 foot or 6 meter chart. The 20/20 doesn't need to be ultra sharp, remember being able to identify half or better on a line is a pass, but make sure you are only giving yourself credit for letters you can actually see; preferably without [[active focus]].

===Example reduction schedule===
: ''See also:'' [[Guide:Reducing lens complexity]]

If you work around 70 to 90 cm,
* Reduce norm at 80cm through diff (gap of 1 D for first half of norm, second half of diff)
* Reduce diff at 88.89 cm through old diff, 72.73 cm through new diff (gap of 1.25 D for second half of norm, first half of diff)
{| class="wikitable" style="text-align:center;"
! Normalized
! Differentials
|-
| -2
| -1

|-
| -2
| -0.75
|-
| -1.75
| -0.75
|-
| -1.75
| -0.5
|-
| -1.5
| -0.5
|-
| -1.5
| -0.25
|-
| -1.25
| -0.25
|-
| -1.25
| 0
|-

| -1
| 0
|}

This can be generalized to alternating a gap of <code>G-0.25 D</code> and <code>G</code>, with these properties:

* Reduce norm at <code>1/G</code> through diff (gap of <code>G-0.25 D</code> for first half of norm, second half of diff)
* Reduce diff at <code>1/(G-0.125 D)</code> through old diff, <code>1/(G+0.125 D)</code> through new diff (gap of <code>G</code> for second half of norm, first half of diff)
* Norm always has 0 to 0.25 D of undercorrection.
* Diff always gives cm within 0.125 D of <code>1/G</code>.

==How to reduce==
Once your measurements justify that reduction you want to start out with the new correction properly, which is why it is best to perform a "[[zero diopter reset]]".

==Further Reading==

===Blog===

* [https://endmyopia.org/qa-can-reduce-1-2-diopter-get-moar-gains/ Can I Reduce More Diopters For More Gains?] (NO.)

* [https://endmyopia.org/reducing-too-quickly-why-its-your-biggest-mistake/ Why reducing too quickly is a big mistake]

===Forum===

* [https://community.endmyopia.org/t/ocular-dominance-why-your-eyes-each-dont-see-the-same-o-0/1401/60 halmadavid's simple, but concise description for reduction]
* [https://community.endmyopia.org/t/are-my-normalized-too-weak/16037/2 BiancaK on a laid-back approach to reducing diffs & norms]
* [https://endmyopia.org/how-fast-does-my-eyesight-improve-when-can-i-reduce-diopters/ STOP CARING ABOUT IMPROVING YOUR EYESIGHT]

* [https://community.endmyopia.org/t/reducing-more-than-advised/4685 Endmyopia recommends reducing ones spherical correction by 0.25 diopters at a time, why is that?] by Laurens
===Wiki===
* [[Guide:How to measure your eyesight | How to measure your eyesight]]
* [[Reduced_lenses | Reduced lenses]]
* [[Guide:Reducing lens complexity | Reducing lens complexity]]
* [[Guide:Reducing_differentials | Reducing differentials]]
* [[Guide:Reducing normalized | Reducing normalized]]
* [[Guide:Not_reducing_too_quickly | Take it slow]]

Guide:Not reducing too quickly

2022-12-13T18:24:40Z

Lloydmom:

The temptation of every student of EndMyopia is to reduce their correction faster or more than their measurements justify. Or in many cases to cause their measurements to justify a reduction they have not actually yet earned, by using [[active focus]] when measuring. [[Visual acuity]] is not intended to be a measurement of your ability to active focus. Your true myopia value doesn't change until your vision actually improves. The amount of correction you're wearing is arbitrary rather you are .25 diopters under corrected or 2 diopters. The only difference being rather the correction you are wearing provides good stimulus or excessive strain and risk of [[blur adaptation]].

==Avoiding the too fast reduction trap==
The best ways to avoid falling into the trap of reducing too quickly or too much is to be sure you are measuring objectively and as accurately as possible. Many things affect our vision and if you only take into account the measurements achieved with the ideal settings (ex. outside in full sun, first thing in the morning) you will always reduce faster and/or more than you should. By all means note these measurements but also get measurements that are in less ideal conditions (ex. artificial lighting at the end of the day). If you are taking your full range of vision into account you are much more likely to set your correction at a middle point, to provide good stimulus without excessive blur in most settings. It is usually not a good idea to reduce until you are consistently measuring 20/20 indoors for about 2 weeks.

Also note that different aspects of your vision tend to be affected at different rates, it is not unusual to have your [[snellen chart]] results change at a different time than your cm measurements. Often your distance landmark (provided you have a proper text reference) will be the last thing to improve, as it is well outside the diopter bubble. Additionally your eyes will improve at a different rate in relation to each other. This is known as [[ocular dominance]] and it is important to be sure both eyes are ready to reduce or you will be putting your non dominant eye at a disadvantage in the new correction and this may result in opening a [[diopter gap]] that can and should be avoided.

The point will come in your reduction when all of your measurements reflect your improvement consistently in both eyes and then you know it is time to reduce.

==I already reduced==
If you already fell into the trap of reducing too quickly or too much, don't worry you are not alone. If you are still managing to improve, great! You got away with it this time; don't expect it to be a pattern though. More likely though you have stalled in progress and it is time to dial that correction up to where it belongs. Having a correction just .25 less than your full [[20/20 correction]] is the best way to provide good stimulus with resolvable blur that doesn't disrupt your day to day life. '''Going back up is not a step backwards''', once again your true myopia value is the same regardless of how under corrected you are. Increasing your correction gives your eyes the opportunity to achieve [[active focus]], without which you will not improve. Don't waste time and risk [[blur adaptation]] trying to "stick out" a correction that has too much blur, put that correction away (you will get back to it) and get into the right correction.

==See Also==

* [[Blur adaptation]]
* [[reduction | Reduction]]
* [[Guide:Reducing lens complexity | Reducing lens complexity]]
* [[Guide:Reducing_differentials | Reducing differentials]]
* [[Guide:Reducing normalized | Reducing normalized]]
* [https://endmyopia.org/qa-can-reduce-1-2-diopter-get-moar-gains/ Can I Reduce More Diopters For More Gains?] (NO.)

==References==
What does Jake say about it? https://endmyopia.org/reducing-too-quickly-why-its-your-biggest-mistake/

More here: https://endmyopia.org/?s=reducing+too+quickly

Writing:Theory for battling Blur Adaptation

2022-12-10T19:20:20Z

Lloydmom: Lloydmom moved page Writing:Theory for battling Blur Adaptation, to Writing:Theory for battling Blur Adaptation without leaving a redirect

{{Writing|author=Lloydmom}}


==What is blur adaptation==

[[Blur Adaptation]] or as often referred to in the EM community "Blur Habituation" occurs when an individual has either never worn correction, has not worn correction for a long time or has gone excessively under corrected for a long time. This is problematic when approaching the EM method because [[Active Focus]] generally requires that the visual cortex has a concept of clarity in order to achieve it. Additionally, one cannot clear blur they do not perceive to be present.

==So what do I do?==
In truth it isn't likely that your eyes will improve without a better reference for clarity to work with. You are going to need some corrections to leverage this method, though that might prove tricky. There are two problems common to blur adapted individuals.

The first issue is that going from no correction to full correction can be uncomfortable in some cases intolerable. This can be resolved by moving up in stages. Time to get on that online retailer site of your choosing, because this is going to be a bit of guess work. I would say go with up to three corrections at this point, and make them your best guesses, It is not a great idea to get too far ahead of yourself. Also by the time you are ready to order again it is very possible you will have a much better understanding with witch to make your future selections. Do be certain to have a system in place to label your corrections so as to avoid confusion of your corrections as you go. If you are ordering the same frames add a request to include a label with each pair of glasses. I would suggest you try roughly half what your full correction is, as a starting point. Then order in increments of not more than a diopter per step to reach that full correction. As it is never wise to change corrections too often; an acclimation period of 4-6 weeks is advised. Once you get to the point you find a good [[differential]] remember to keep them as you introduce new higher diopters for distance, this will be the point you begin to more fully engage in the EM method by switching between two focal planes to maximize stimulus and minimize strain. As you can see this is going to be a bit of a process, but when you remember you are going to spend the rest of your life with your eyes I think you will agree that it is worth it.

The second issue is that many people who are blur adapted can't see 20/20 in any correction, that is ok for the moment, sort out how to get close now and later shift your standard for clarity. While it is ideal to get the visual cortex up to 20/20 before trying to come back down in diopter, a temporary goal of 20/30-20/40 is still better than suffocating in blur if you truly can not achieve 20/20.

In the meantime, while you not only wait for those new corrections to arrive but begin working your way up to that full correction you may be able to release some if not all of your [[ciliary spasm]] with some changes in your [[habits]] and a good amount of outdoor time that engages your vision. Please note gazing off into the distance is not likely going to cut it for engaging with you vision. It is a good idea to rather play spotter games (even if it is just with yourself), seek details and track movement. It is also a good idea to work on peripheral awareness. This can be accomplished by staring straight ahead then taking inventory of everything you can see that is not directly in that center portion of focus, remember no moving your head or eyes here. Later try fixing you eyes on a point ahead as you walk and track objects in your periphery as you walk, ideally not near any hazards as this may take a fair amount of your attention in the beginning. If you are able to release spasm while you are working your way up, you might find yourself at a 20/20 correction sooner than expected.

Big Tip Time

It is also good to remember small sustainable changes is the most effective way to build good habits, don't try to change everything today. Pick up to three things to change this week and with those in place build from there.

Also if your are helping a child with this be certain to never turn this process into a chore or what may be perceived as a punishment. While you of course mean well, it is unfair to change all the rules at once and your child's cooperation is essential to success. [[Child myopia]] is an issue that needs to be addressed with patience and finesse, incorporating [[focus games for kids]] will be helpful, though these games are not just for kids :D.

'''Disclaimer!! EndMyopia neither encourages nor condones driving with under correction that does not at least meet if not exceed local legal guideline, most frequently 20/40.'''

[[Category:Project Miscellaneous]]

Writing:Theory for battling Blur Adaptation

2022-12-10T19:12:30Z

Lloydmom: Created page with "{{Writing|author={{subst:REVISIONUSER}}}}  ==What is blur adaptation== Blur Adaptation or as often referred to in the EM community "Blu..."

Child Myopia

2022-11-11T23:29:25Z

Lloydmom:

==Introduction==
All parents approaching EndMyopia for their children, come with a sense of urgency. Please understand this is not a good approach. You need to be calm and rational in order to make good choices for your child. Remember '''myopia is NOT a medical condition''', it is a [[refractive state]]. If your child had good vision before, they should be able to have it again. If your child does have a medical condition there might be limitations to how much this method will help, however the practices are worthwhile applications for their future vision just the same. Ideally, a myopic adult would start with EndMyopia then help a child. It is very important that an adult who fully understands the method and what vision improvement requires works with the child in question.

==Please Note==
It might be helpful to consider that myopia control and reversal is less like potty training (go hard for a few weeks and it's typically done with) and more like getting them to pick up after themselves (every parent knows this is a long haul lesson). Small changes over time will be a good approach.

==Getting Started==
Most parents new to the method have the first instinct to take away their child's correction and take away most of, if not all of, their favorite close-up activities.

Let's start with the desire to take away correction. Don't. If your child was just told they need glasses and they have never worn them before by all means hold off on introducing correction, you might even find with new [[habits]] they won't need correction, as long as you are working on their vision, it is not harmful to not rush into correction. But, if a child is already wearing correction they can't just stop. They need to learn to wear the correction only when needed and should never wear their full correction for near work. If their correction is stronger than -2 they will likely require [[differentials]] for near work. Ideally it is best to provide the correction for a greater distance than to have your child looking at things closer in order to eliminate that need for correction; because the closer they are to the object of focus the more strain there is on the eye. Always the goal should be to maximize their distance when in a situation of static viewing; such as reading, playing video games and computer work. The worst danger zone is under 50cms, as you can quickly surmise this includes basically everything within arms reach for children. In actual application especially in school it might be difficult to introduce differentials, if your child is content to remove their glasses and is confident they can see well enough doing so for near work, this is most likely easier than having them switch throughout the school day. Remind them to be mindful of switching focus to prevent [[ciliary spasm]]. For those who cannot remove their correction but are still unlikely to switch correction in school it is even more important to have those good habits as well as a [[normalized]] correction that is only just sufficient to see the board to help minimize [[hyperopic defocus]]. Bifocals and multifocal lenses are not generally indicated, a bit on that [https://endmyopia.org/progressive-lenses-good-myopia-rehab/ from Jake here].

Now on to that other reflex reaction. If you take away all of your child's favorite and accustomed activities, they are not going to see your love for them in it. They are most likely going to hate the sudden onset of restrictions and feel like they are being punished for being myopic. While this is clearly not your intent, this is almost certainly how they will feel. Try to make gradual changes. Reducing time in extreme and static close up needs to be a priority; so anytime you can shift phone and/or tablet activities to a tv at a greater distance this will be progress. Many parents also use book stands to help increase and encourage consistent reading distance. Introduce the [[20-20-20 rule]] during close up right away, and as soon as possible [[differentials]] if/as needed for static close up. It is a good idea to start reducing the close work time itself where possible, but again keeping in mind how important it is that your child doesn't feel penalized for their myopia.

One thing that might help with the 20-20-20 rule is a "stretch buddy" place an object (favorite toy perhaps) at a distance from your child during close up and encourage them to "stretch their eyes" to see the object at regular intervals, picking out details on it as much as possible. Don't worry overmuch about activities like Legos and Play-doh, 3-D objects and activities tend to have a lot of shifting focus, these activities are not particularly harmful, provided there is good lighting and your child gets good distance vision as well. It is static vision that is the primary concern.

==Measuring==
Getting your child to look at a [[Snellen Chart]] is probably best saved primarily for measurements, and for younger children there are kid friendly snellen charts that will probably prove more engaging. It is a good idea to have several charts, it is easy to memorize a frequently used chart, so rotate often for more accurate testing. You will of course want to do centimeter [[measurement]]s as well. Try to keep measuring light and fun, causing yourself or your child stress with measuring is not going to be beneficial for anyone. Jake does recommend hanging a snellen chart in the home; however for children it is probably a good idea to have well placed text stimulus beyond that, keeping some novelty to the snellen chart might well help your child engage more when you are doing measurements.

==Active Focus==
Children have a hard time grasping [[active focus]] but encouraging them to engage with their vision through play is easy to do, when you can get them to do this outside, even better. Some ideas here: [https://wiki.endmyopia.org/wiki/Focus_Games_for_Kids focus games]. It is important to discourage squinting and blinking unnaturally hard in order to clear blur. These are both bad habits to form and difficult to break. If you have a fairly good handle on active focus, your child is a little older and feel you can convey active focus to your child on their level by all means do so. However for the most part children are going to be more inclined to clear blur when it is part of an activity, rather than the clearing of blur being the activity alone.

==Prioritize Stabilization==
While it is understandable that you want to reverse your child's myopia quickly, take into account that it is quite likely that their eyes are currently getting worse. Stopping that progression is the first big step, and even if that is all you manage, that is a win. Correct use of correction for a given task, time outdoors engaging with distance vision, and good near work habits are typically enough to accomplish this goal.

Your child may or may not choose to reverse their myopia, and hard as it is for a parent to accept, that is their choice. But enabling them to stop its progression and giving them the option to reverse it, now that you know it is possible, is an advantage that most people don't have; children and adults alike.

==Important==
'''Please don't make any changes to your child's correction until you can make an informed decision'''. Communicate with your child about their vision, even preschool aged children can relay their own feedback. Marching your child to the optometrist every 6 months is going to be a point of stress and is wholly unnecessary, do your own measurements, and keep it light. Keep in mind how you would deal with your child concerning any other matter. Don't forget you are building better vision habits for life, there is no need to frustrate yourself or your child by pushing for fast changes and results. Remember this is not a medical condition, certainly don't neglect it, but this is more of a marathon than a sprint, so slow and steady is the way to go.

==See Also==
[https://wiki.endmyopia.org/wiki/Guide:My_Child_Has_Myopia Guide for child myopia]

[https://wiki.endmyopia.org/wiki/Focus_Games_for_Kids Focus games for kids]

[https://endmyopia.org/help-i-need-to-fix-my-childs-eyes-fast/?fbclid=IwAR07-YkAVQkUztoC_l3Fjd4CUCvkug6f6K3gm2xsQeGjgyKF2pZmCKoM04w Jake's take on looking for the quick fix to Child Myopia]

==References==

Video by Jake: https://endmyopia.org/young-child-glasses-one-focal-plane/?fbclid=IwAR248tHeLLJ4owkJXrTocuOK_SPs4rXyBk4LOAOmP1ki2z7coxYATJ_mlB8

Full playlist for Child Nearsightedness: https://www.youtube.com/playlist?list=PLgB_5pbB86Giioahj-P0PBHlervYKStyp

The EndMyopia Blog:

[https://endmyopia.org/child-myopia-prescription-strategies/ Child myopia diopter strategies]

[https://endmyopia.org/active-focus-the-key-to-reversing-myopia/ Child active focus]

[https://endmyopia.org/?s=childhood+myopia Child myopia 1]

[https://endmyopia.org/category/child-myopia-2 Child myopia 2]

[https://endmyopia.org/active-focus-games-for-your-children/ Active Focus games for kids]

==A Final Note==
Obviously, there is the whole rest of the method to add to this, and if you need more help Jake has an add-on to the adult [[BackTo20/20]] program.

Measurement

2022-11-09T12:49:50Z

Lloydmom: /* See Also */

:''See also:'' [[Guide:How to measure your eyesight]]
==Stay calm==

In general, your measurements actually change wildly within the day. They're mostly useful for checking that you're not going off track with habits changes, or for measuring relative changes in vision in different circumstances. (e.g. diet, time of day, and activity)

As far as what progress you can see, that appears to actually be fairly individual. You need to measure to learn about how you see things. But think of general changes on the span of multiple weeks, or even a month or so.

Measurements are a learning process, not a goal

== cm Measurement ==
The cm measurement uses a basic optics formula to calculate the diopters of correction you need to see clearly long distance.
# Hold a ruler up to your eye, and measure how far away you can still read text without [[blur]] in centimeters. This is your "cm measurement".
#* The ideal precise measurement is from the surface of your eyeball, but this is obviously not safe, so measure from some facial structure near your eye.
#* Consistency is more important than accuracy, you want to be able to track your small changes over the course of a day, and larger changes over time.
# Calculate diopters from the measurement: [[Diopters]] = -100cm/cm measurement.
# If your result is stronger than -4D, and you wear glasses, you'll need to correct for [[vertex distance]] to convert this from contacts diopters to glasses diopters.
# If your result is stronger than -10, you'll likely have problems getting consistent readings.

== Trial Refraction ==
If your vision is worse than -10D, you may need a [[trial lens kit]] to measure your own myopia, or you may just stick to professional [[optometrist]] exams.

<youtube>n2ku6gJ3z7E</youtube>

== Tools ==
* [[EndMyopia Diopter Calculator]]
** [https://endmyopia.org/another-diy-diopter-measuring-tool/ Making the physical measurement easier] (EndMyopia blog link)
*[[Varakari's Vision Log Tool]]
* [https://endmyopia.org/measure/ Measurement] (EndMyopia blog link)
* [https://testflight.apple.com/join/wuAvRvdL The iOS Sight Meter App]
* [https://play.google.com/store/apps/details?id=org.endmyopia.calc The Android Diopter Calculator]

==See Also==

* [[Astigmatism measurement]]

* [[Guide:How_to_measure_your_eyesight|How_to_measure_your_eyesight]]

* [[Guide: measuring with differentials| Guide to measuring with Differentials for high myopes]]

==References==
{{reflist}}
[[Category:Articles]]

Writing:I am a student, Help!

2022-08-01T15:46:09Z

Lloydmom: Lloydmom moved page Writing:I am a student, Help! to Writing:I am a student, Help

#REDIRECT [[Writing:I am a student, Help]]

Writing:I am a student, Help

2022-08-01T15:46:07Z

Lloydmom: Lloydmom moved page Writing:I am a student, Help! to Writing:I am a student, Help

{{Writing|author=Lloydmom}}


==The student's most asked question==

One very commonly raised concern is that of students. It is always the same concern: "Which correction do I use in class?" While the phrasing varies from one query to the next, the question is essentially the same.

==The scenario==
When you are in class (or the boardroom for that matter), you are trying to take notes (close up) and you need to see the board during the lecture (distance). The conclusion people arrive at is that in order to apply the EndMyopia method one must switch between [Differentials] and [Normalized] many times. Naturally the idea is unappealing. Not only will you attract unwanted attention, your productivity will suffer from the distraction, and you will likely end up with a headache and/or a pair of unhappy eyes from the frequent changing.

==What to do==
It is important to understand that Differentials are for extended close work. Taking notes in class is not extended close work. The most practical thing to do here is to wear your normalized. Looking down for a quick jot is not going to do any real damage to your progress with EM. Don't mistake this for a pass to use normz on your phone "just for a second", this should always be a exception to the rule, based on the obligation of your work.

Another option, depending on your diopter dependence, is to peek under your glasses when taking notes. If you follow the EM suggestion for larger frames then it might be helpful to have a smaller frame specifically for classroom use.
*Please note: It is '''not''' in accordance with EM recommendations to use bifocal or multifocal lenses.

==Take heed==
If you start extending this exception beyond the obligation of the classroom (boardroom) you will likely find it hinders your progress.

It is of course important to switch to Differentials to study and for all of your extended close up, and avoid extra close up beyond what is required. As long as you mind this and you are good about getting distance vision to balance out your close work, there is no reason you will not progress just as well as anyone else.


[[Category:Project Starting EM]]

Writing:I am a student, Help

2022-07-19T14:39:36Z

Lloydmom: Created page with "{{Writing|author={{subst:REVISIONUSER}}}}  ==The student's most asked question== One very commonly raised concern is that of students. It is a..."

{{Writing|author=Lloydmom}}


==The student's most asked question==

One very commonly raised concern is that of students. It is always the same concern: "Which correction do I use in class?" While the phrasing varies from one query to the next, the question is essentially the same.

==The scenario==
When you are in class (or the boardroom for that matter), you are trying to take notes (close up) and you need to see the board during the lecture (distance). The conclusion people arrive at is that in order to apply the EndMyopia method one must switch between [Differentials] and [Normalized] many times. Naturally the idea is unappealing. Not only will you attract unwanted attention, your productivity will suffer from the distraction, and you will likely end up with a headache and/or a pair of unhappy eyes from the frequent changing.

==What to do==
It is important to understand that Differentials are for extended close work. Taking notes in class is not extended close work. The most practical thing to do here is to wear your normalized. Looking down for a quick jot is not going to do any real damage to your progress with EM. Don't mistake this for a pass to use normz on your phone "just for a second", this should always be a exception to the rule, based on the obligation of your work.

Another option, depending on your diopter dependence, is to peak under your glasses when taking notes. If you follow the EM suggestion for larger frames then it might be helpful to have a smaller frame specifically for classroom use.
*Please note: It is '''not''' in accordance with EM recommendations to use bifocal or multifocal lenses.

==Take heed==
If you start extending this exception beyond the obligation of the classroom (boardroom) you will likely find it hinders your progress.

It is of course important to switch to Differentials to study and for all of your extended close up, and avoid extra close up beyond what is required. As long as you mind this and you are good about getting distance vision to balance out your close work, there is no reason you will not progress just as well as anyone else.


[[Category:Project Starting EM]]