Endmyopia Wiki - User contributions [en]

Active Focus

2021-10-07T12:48:02Z

Shaerah: /* Implementing Active Focus */

[[File:AF car visual aid.png|right|thumb|450x700px|Active Focus lets you break the limitations of the glasses you are wearing. Without AF, blur is static and does not change. With AF, blur becomes malleable and more like a spectrum which you can shift up and down along as you like. You aim for maximum clarity and as little blur as possible.]]
'''Active Focus''' is an essential part of EndMyopia. It can be described as conscious relaxation of the [[ciliary muscle]]. It results in clearer vision, and provides [[stimulus]] to improve eyesight in the long-term. It's probably the largest stumbling block in beginning to improve your eyesight.

Active Focus tends to elude newcomers who try to find it for the first time. You should expect to spend [[Explainer:There's a learning curve|quite some time]] to find it yourself. The experienced EndMyopian is likely to tell the newcomer with delight that it works, how it clears up their vision and the long term [[gains]] they have made. The newcomer will listen on, maybe intrigued, but still will doubt the existence of it completely, until they experience it for themselves. In that sense, finding Active Focus is a little like taking the [[Wikipedia:Red_pill_and_blue_pill|red pill]].
==How it works==
Active Focus resolves a small amount of [[myopic defocus]]. Doing Active Focus provides the necessary stimulus to reverse the effects of [[myopia]].<ref>{{cite web |url=https://endmyopia.org/faq-items/what-is-active-focus |title=What is Active Focus |last=Steiner |first=Jake |website=Endmyopia |access-date=11 June 2020}}</ref><ref>{{cite journal |last1=Vasudevan |first1=Balamurali |last2=Ciuffreda |first2=Kenneth |date=2009 |title=Accommodative Training to Reduce Nearwork-Induced Transient Myopia |url=https://pubmed.ncbi.nlm.nih.gov/19786929 |journal=Optometry and Vision Science |volume=86 |issue=11 |pages=1287-1294 |doi=10.1097/OPX.0b013e3181bb44cf |access-date=11 June 2020}}</ref> It is also important in managing eyestrain.<ref>{{cite web |url=https://endmyopia.org/active-focus-links/ |title=Active Focus: The Link List (+ Video Explainer) |last=Steiner |first=Jake |website=Endmyopia |access-date=11 June 2020}}</ref>

Active Focus attempts to push the distant vision of the eyes slightly further. However, as [[accommodation]] is a voluntary process, achieving Active Focus is not straight forward. While it is easy to move the skeletal muscles of your body, it is not possible to control the [[ciliary muscle]]s in the same way. However, by careful manipulation of the [[blur horizon]], it is possible to encourage the eyes to push slightly harder to achieve focus. This extra push is what Active Focus is about.

In order to do this successfully, it is important to introduce appropriate amount of [[blur]] challenge to the eyes. This can be accomplished by the use of [[normalized]] and [[differential]] glasses. As opposed to full correction glasses where everything is always sharp, normalized and differential glasses provide convenient access to a blur horizon. This blur horizon allows for the practice of Active Focus. Again, the blur challenge should not be so much that it is too difficult for the eyes and not so little that it is unnoticeable.
==Implementing Active Focus==
Practicing Active Focus should not be viewed as an exercise activity. It should be incorporated to your daily lives so that it becomes habitual.<ref>{{cite web |last=Steiner |first=Jake |title=Minimum Daily Active Focus Time? (PRO TOPIC) |url=https://www.youtube.com/watch?v=nQXqHXtpDp4 |access-date=11 June 2020 |publisher=YouTube}}</ref> With proper use of normalized and differential glasses, opportunities to do Active Focus throughout your day are everywhere. By turning it into a habit, blur challenges are automatically cleared, thus eliminating the need to "put in effort" to improve. Taking frequent breaks from near visual work to do Active Focus is critical in preventing ciliary spasm and the worsening of myopia. With consistent practice of Active Focus, it is estimated that myopia will reverse at a rate of 0.25 diopters every 3 months.
<youtube>7BvHDvrk0dQ</youtube>

==Active Focus in small words==

Look at something that is [https://wiki.endmyopia.org/wiki/Blur_horizon only a little blurry]. Make it not blurry.

==See also==
* [[Guide:How to find Active Focus]]
* [[Community:A Million Ways to Find Active Focus|A Million Ways to Find Active Focus]]
* [https://endmyopia.org/active-focus-links Active Focus: The Link List (+ Video Explainer)]

==References==

{{reflist}}

[[Category:Articles]]

Talk:EndMyopia

2021-09-12T21:35:53Z

Shaerah: /* Discussion */

=== Discussion ===
A place to discuss the [[EndMyopia]] page. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 20:43, 18 May 2020 (UTC)

EndMyopia Subreddit

2021-09-12T21:31:32Z

Shaerah:

'''The EndMyopia Subreddit''' is a public discussion area on the Reddit website. It was started in March 2018 by /u/jake_reddits ([[Jake Steiner]]).

It's much less popular than the [[EndMyopia Forum]] or [[Facebook group]].

==Join==
{{bigger|[https://www.reddit.com/r/endmyopia/ The EndMyopia Subreddit]}}

== Some past discussion ==
* [https://www.reddit.com/r/endmyopia/comments/ag5y7v/accidentally_corrected_my_vision_slightly_before/ Accidentally corrected my vision slightly before finding endmyopia.org]
* [https://www.reddit.com/r/endmyopia/comments/ce82l2/optometrist_confirms_improved_eyesight/ Optometrist Confirms Improved Eyesight]
* [https://www.reddit.com/r/endmyopia/comments/gpj5pk/my_contacts_for_the_past_year_originally_425_in/ My contacts for the past year - originally -4.25 in 2018, found endmyopia and bought -3.50 in April 2019. Now -2.75 in May 2020.]

==Other resources==
{{Resources list}}

[[Category:Articles]]
[[Category:Community]]

EndMyopia Forum

2021-09-09T15:06:53Z

Shaerah:

[[File:Forumpic2.png|right|700px]]

The '''EndMyopia Forum''' is a forum where people discuss vision improvement stuff. People in the forum tend to be slightly more invested with vision improvement and how everything works compared to other platforms. It runs on [https://www.discourse.org/ Discourse] forum software.
The forum is free and open to anyone.
As of June 2020 there is a high level of posting activity with over 4500 users registered.
{{clear}}
==Community House Rules==
* [https://community.endmyopia.org/t/house-rules-read-me-first/2660/ House Rules]

==Join==
* https://community.endmyopia.org/
==Other resources==
{{Resources list}}
* [[Seven day free email guide]]
[[Category:Articles]]
[[Category:Community]]

Guide:Start your improvement here

2021-09-09T15:01:58Z

Shaerah: /* Time to Learn */

[[File:EMBoxLogoTransparent.png|right|200px]]
'''Welcome to EndMyopia''', the prime place on the internet for regaining your own natural eyesight and reversing your [[myopia]].

'''EndMyopia isn't a simple program of steps. This page is just the entrance to the rabbit hole.''' Nobody here can tell you how well your eyes will react to a specific change, or what glasses are right for your eyes and your vision habits and your work requirements, we can just give you the tools to understand your own eyesight, what causes myopia progression and how to stop and reverse it.

==The Beginning Steps - Stop Myopia Progression==
# Measure your eyes - you can start with a professional refraction, but you should also learn to measure your own vision at home.
#* If your refraction is better than -10, the [[Measurement#cm_Measurement|cm measurement]] is easy to do and compare values. The cm measurement measures your myopia.
#* The [[Snellen chart]] measures all the combined factors of [[Visual acuity]] and is necessary for checking if your vision meets the legal requirements in your jurisdiction for driving.
#* Measuring your myopia and visual acuity regularly will tell you when the steps you are taking are working.
# Take breaks from near work (Follow the [[3 hour rule]] or the [[20-20-20 rule]] for starters)
# Don't wear glasses for near work if you don't need them.<ref>[https://endmyopia.org/day-57-myopia-progression-the-one-thing-you-have-to-stop-doing Myopia Progression: The One Thing You Have To Stop Doing]</ref>
# Get separate glasses for near work if you do need them. We call these [[Differentials]] if your doctor is willing to prescribe them, he may call them computer glasses or reading glasses.<ref>[https://endmyopia.org/day-67-differential-glasses-for-close-up-use Differential Glasses for CLOSE-UP Use]</ref>
# Give this a few weeks, you may be able to release [[Pseudomyopia]] with these steps alone, which will change your eye measurement that you will base your next pairs of glasses on.

==Time to Learn==
[[File:Cute cat with glasses and tie reading laptop.gif|right]]
Experience has shown many times that without adequate knowledge of the process, people are really unlikely to make any improvements in their eyesight. There is always more to learn about vision improvement, and you should not be afraid to spend significant amounts of time reading the resources already available to you. Arm yourself with knowledge to deal with any bumps in the road that come your way. The community won't answer your medical questions or diopter specific questions, take medical questions to your doctor, and do your own work to understand your specific diopter needs.
# Get the [[seven day free email guide]] - This is a must, if you ask a question in the community that's answered in this guide, your thread will quite possibly be closed by a moderator.
# Consult the [https://endmyopia.org/faqs/ Blog Frequently Asked Questions] and [[Frequently Asked Questions| Wiki Frequently Asked Questions]]
# Read the [{{em}} the blog]
## Hover over (with your mouse) “Blog and How-to’s” and check the “Eyesight How-To’s” and any other sections relevant to you.
## Search the blog. Do you know how to search the [https://endmyopia.org/ blog]? Hit the 🔍️ in the upper right corner and fill in the relevant search item there.
# Watch [[EndMyopia YouTube Channel]]
# Watch [[List:Community YouTubers]]
# Use the Wiki as a reference when you need an overview of a new topic.
# Read the [[Guide:How to ask for support]] then join the [[EndMyopia Forum]] Community.

==Future Steps - Reverse Your Myopia==

# Get slightly reduced glasses for other times when you don't need perfect vision. We call these [[normalized]]. They give a slight blur challenge at a distance. Because glasses are generally rounded off to the nearest quarter diopter, full strength lenses are likely to be slightly over prescribed even if your [[optometrist]] follows the best practices and procedures of his profession. A quarter diopter low would put your distance to blur at 4m, or about 13 feet, and allow your [[ciliary muscle]] to relax when viewing at that distance and beyond. <ref>[https://www.youtube.com/watch?v=LI9JphYXQ6A 20/50 Rule For Improving Eyesight]</ref>
# Find Active Focus, a way of getting your eyes to see slightly further than their normal distance to blur. [[Guide:How_to_find_Active_Focus|Guide: How to find Active Focus]] <ref>[https://endmyopia.org/active-focus-links/ There is a category of blog posts about Active Focus here.]</ref>
# When you're ready, do your first [[reduction]]<ref>[https://www.youtube.com/watch?v=zzrQb4pCFkQ Reduce Normalized Diopters]</ref>

==Keep Learning==
This page is just the entrance to the rabbit hole. Keep referring to the learning resources above even after you've made your first successful reductions.

You are likely to make mistakes along this journey: there is trial and error as you perfect the approach taken to improving vision. If at any time you have discomfort or disfunction in your new glasses, step back to the previous pair you were comfortable in. The basic ideas are really simple to understand, but there is a lot of nuance in how to apply them, and this can take time to understand fully.

==Beginner's Guide to Vision Improvement==
<youtube>XPIGDSY_xBs</youtube>

==See also==
* [[Student content for new members]]
* [https://www.youtube.com/watch?v=xU6mJr16huk Video Version of Getting Started]
* [https://endmyopia.org/how-to-eyesight-improve-five-steps/ How To Improve Your Eyesight: Just 5 Steps]

[[Category:Guides]]

Close-up

2021-09-09T14:34:06Z

Shaerah:

Close up work is doing any vision task at arm's length or less for an extended period of time. This includes reading, phone time, computers, needlework, and many others.

When doing close up work, wear your [[differentials]] and follow the [[3 hour rule]] or the [[20-20-20 rule]].
==Videos==

{{#ev:youtube|E_STOn8NjzM}}

==References==
{{reflist}}

[[Category:Articles]]

3 hour rule

2021-09-09T14:33:41Z

Shaerah:

The 3 hour rule is a suggestion to keep a balance between near work and time spent using distance vision and reduce [[eye strain]]. This can be an effective alternative to the [[20-20-20 rule]].

* For every 3 hours of close-up time, try to get an hour of distance time.
* Try not to exceed 3 hours of close-up time.

If you do near work for 4 hours or more, it is likely you will have ciliary spasm and it may be more difficult to make improvements.
==Videos==

{{#ev:youtube|kIuN9Jjxccg}}

Pupillary Distance

2021-09-09T13:52:45Z

Shaerah:

Pupillary Distance (PD) is the distance between your pupil centers. This measurement is important when ordering glasses to make sure you are looking through the optical centers of your lenses. If you have glasses made by an [[optician]] they may take additional measurements, but those require the frame to be on your face, and standard values are used by online glasses suppliers for those measurements. This is fine for most people, but may be a source of discomfort for some.

==Near PD==
Because your eyes [[converge]] to look at things close to you, your PD is going to be smaller when doing [[near work]] than for [[distance vision]]. If you are buying [[differentials]] or [[reading glasses]] your near PD should be used.

==From the blog==
[https://endmyopia.org/how-to-measure-pd-pupillary-distance/ Headaches & Fatigue: Measure Your Pupillary Distance (PD)]

[[Category:Articles]]

Differentials

2021-09-09T13:44:00Z

Shaerah:

[[File:Microsoft Cloud Event Dublin, upclose with graphs.jpg|thumb|Without ''differentials'', you're on the path to ever increasing prescriptions and will get nowhere with vision improvement :(]]
'''Differentials''' ([[EM:JARGON|jargon]]), (''close up'', ''computer use'' or ''diffs'') are reduced strength glasses or lenses for [[close-up|close up activity]]. They have a lower correction than your [[normalized]] lenses, the difference between them being usually between 1 and 2 [[diopters]].<ref>{{cite jake|https://endmyopia.org/faq-items/what-is-the-differential-prescription/|What is the differential prescription?}}</ref><ref name=ChooseReduction>{{cite jake|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref>

==Low Myopia==
People with myopia of -2 D and lower do not typically need to wear differentials (because with -2 D your distance till blur should be around 50 cm - far enough to see your screen with sufficient clarity). The exception being that if you have more than 1 diopter of cylinder correction you will likely need differentials to help manage directional blur. In this event you likely can reduce the cylinder correction by between .25 and .75 D and pair it with a reduction of up to 1.25 D in spherical strength for either little or no spherical (plano) correction.

==First Differentials==
The first differentials are typically 1.5 D weaker than your [[measurement]] for full distance vision. If you have -0.25 to -0.75 D of cylinder, you have the option of dropping that and having the sphere only 1.25 D weaker.

See [[Lens#How to use Contacts with EM|How to use Contacts with EM]] if you wear contacts.

==Adjusting Differentials==
Ideally your differentials give you a small amount of blur at your daily near work. The nature of your work, the distance to your work, and your [[refractive state]] and [[cylinder]] dependence are all factors in choosing your differentials. The ideal distance for near work is not closer than 50 cm. You may get your first differentials and discover you have a headache and you really shouldn't have dropped cylinder. You may find that your work is pretty close or really far and you need to adjust the strength up or down. You may find that you really need detailed vision to do your work and you'll settle for slowing progression with your differentials and do your blur challenge for improvement in your off hours. This is the first place in the program where you really need to start understanding what you're tinkering with and make personalized diopter specific choices.

==Why are differentials worn?==
The primary stimulus for [[axial elongation]] of the eyeball is [[hyperopic defocus]], which occurs when someone:
* is engaged in close-up activity
* wears more correction than needed when seeing the object that is close up.

Differentials allow the wearer to wear ''just what they need to'', to see up close. This removes the stimulus of hyperopic defocus and stops eyes from getting more myopic. In a sense, it's a [[quick fix]]. {{wink}}

It's fairly easy to stop [[lens-induced myopia]] from progressing by just wearing differentials. The axial length of the eye does not randomly change by itself; it only changes in response to [[stimulus]].

Another reason to wear differentials is to avoid [[convergence]] issues. When viewing in close proximity the position of your eyes needs to compensate by turning in, particularly when you are looking nearer than 50 cm. Doing this for long periods of time on a regular bases is likely to cause issues. Such issues are easily avoided by wearing differential correction to accommodate a larger distance.

== Habits ==
It is useful to apply the [[3 hour rule]] or the [[20-20-20 rule]] when engaging in close up (near) work.

Always be mindful to be in a good ergonomic position. Leaning in is a common issue and is something you need to be mindful to avoid.

Good ambient lighting is important because your eyes can not see as far or as well in low lighting. Natural light is best but supplement as needed.

== See also ==
* [[Guide:Reducing differentials]]
* [[Guide:Measuring with differentials]]

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

Bates Method

2021-09-09T13:41:47Z

Shaerah:

The '''Bates Method''' is a modern interpretation of [[Wikipedia:William_Bates_(physician)|William Horatio Bates]]' teachings. Contemporary practitioners of the method believe that using [[eye exercise]]s to relieve [[eye strain]] will reverse [[myopia]].

Bates was the first (recorded) physician to propose and promote a way to reverse myopia and reduce one's dependence on glasses. His expertise and insights were built upon the knowledge that was available at that time.

A copy of his original work can be found [https://cleareyesight-batesmethod.info/id148.html here] under "Original Issue of Better Eyesight, Nov., 1926 and Perfect Sight Without Glasses Pamphlet"

EndMyopia is based on the premise that a stimulus is necessary to induce a change. Bates' teachings, both found in his original work and the modern day spin-offs, do not provide such a stimulus. This makes it hard (if not impossible) to use the Bates Method to get back to full natural eyesight without using corrective lenses or laser surgery.

Similar to Bates' approach, EndMyopia is dependent on eye strain being eliminated. In that respect Bates' exercises provide some relief. [[Ciliary muscle spasm]] is the primary culprit in what is known as "[[pseudomyopia]]/[[near induced transient myopia]]". Exercises used in the Bates Method can relieve eye strain and get rid of [[ciliary muscle spasm]]. EndMyopia proposes the use of [[Active Focus]] in conjunction with enough solid [[distance vision]] to relieve this muscle spasm.

==Bates' eye exercises==
===Palming===
Palming is placing your hands over the eyes for a while. This is done with the intention of reducing strain on the eyes. Like many Bates Method practices, palming may be used to temporarily reduce [[eye strain]]. However, it is always better to resolve the main causes of eye strain, like uncorrected vision and bad close-up habits. Palming is a practice that does not initiate the stimulus-response mechanism of eyesight improvement.
===Swinging===
'''Swinging''' is one of the exercises advocated by the Bates Method. There could be some rationalization for it : by allowing the [[Visual cortex]] to see different focal planes moving relative to each other, it provides information about the relative distances of those planes, which it would
not otherwise have (due to [[Myopic blur]]). The visual cortex could use that extra information in some useful way. It would do no harm to give it a try while observing the [[3 hour rule]] or the [[20-20-20 rule]]. Let us know if you find it helpful.

==Further references==

If you are interested in looking at some of the history of myopia reversal, have a look at this [[https://the-eye.eu/public/concen.org/Five_Health_Classics/BENJAMIN%2C%20Harry%20-%20Better%20Sight%20Without%20Glasses%20%281962%29.pdf work]] by Dr. Harry Benjamin. Although his work is based on many aspects found in Bates' teachings, you will find some noteworthy concepts, in rudimentary form, that are also found in EndMyopia.

==See also==
*[[Wikipedia:Bates method|Wikipedia:Bates method]]
*[[Wikipedia:William_Bates_(physician)|Wikipedia:William Horatio Bates]]

[[Category:Unicorn Farming]]
[[Category:Articles]]

Habits

2021-09-08T22:47:00Z

Shaerah:

'''Habits''' are important in improving your vision in the long term.

One can never be expected to change everything overnight, but small sustainable changes make all the difference. Try adding/changing one thing at a time and implement that change for a few weeks. Once it is a habit, then add another. The first two habits you should implement are, first: never use your full correction for near work (see [[differentials]]) and second: take breaks during near work (see [[3 hour rule]] and [[20-20-20 rule]]). Also never underestimate the importance of light to your vision.
==Videos==
{{#ev:youtube|qiVtBFjW64o}}
{{#ev:youtube|5op-fLx7K8s}}
{{#ev:youtube|1VmCRVqbk28}}

[[Category:Articles]]

Distance vision

2021-09-08T22:44:20Z

Shaerah:

'''Distance vision''' is, for practical purposes, anything over 6 meters or 20 feet. Because the difference in lens power from 6m to infinity is less than 0.2 [[Diopters]], the limiting factor is less about ability to focus than simply the resolution of the retina (the number of the [[rods and cones]] in the back of your eye).

As far as the [[ciliary muscle]] is concerned, your [[Blur Horizon|edge of blur]] is distance vision, no matter what the absolute distance, but you will have [[convergence]] at a near vision angle when looking at edge of blur through [[differentials]]. This is a possible mechanism of action for improvement, when the [[visual cortex]] notices the discrepancy between focus and [[convergence]].

In the EndMyopia system, we use [[normalized]] glasses for outdoor work, for reading street signs, for looking out windows, and other distance vision tasks.

=See Also=
* [[3 hour rule]]
* [[20-20-20 Rule]]

[[Category:Articles]]

Pseudomyopia

2021-09-08T22:43:00Z

Shaerah:

'''Pseudomyopia''' is a temporary shift towards near-sightness and occurs when the [[ciliary muscle]] inside of your eye temporarily locks up due to extended periods of closeup focus, resulting in [[blur]]red distance vision. This is usually the condition people get before they go to the optometrist, and then go onto to develop [[lens-induced myopia]]. If the ciliary muscle spasm is not relieved, then that muscle spasm's degree can worsen over time. Now, it will take longer to fully relax that muscle. Proper [[eye strain]] management and [[active focus]] habits will help to tackle this.

The [[3 hour rule]] or the [[20-20-20 rule]] are useful to avoid a lock up of the ciliary muscle.
==Videos==
{{#ev:youtube|eW4GlNrzZmw}}

==References==
{{reflist}}

== See also ==
* [[3 hour rule]]
* [[20-20-20 rule]]
* [[Low myopia]]
* [[Strain Awareness]]

[[Category:Articles]]
[[Category:Eye conditions]]

Pseudomyopia

2021-09-08T22:42:17Z

Shaerah:

'''Pseudomyopia''' is a temporary shift towards near-sightness and occurs when the [[ciliary muscle]] inside of your eye temporarily locks up due to extended periods of closeup focus, resulting in [[blur]]red distance vision. This is usually the condition people get before they go to the optometrist, and then go onto to develop [[lens-induced myopia]]. If the ciliary muscle spasm is not relieved, then that muscle spasm's degree can worsen over time. Now, it will take longer to fully relax that muscle. Proper [[eye strain]] management and [[active focus]] habits will help to tackle this.

The [[3 hour rule]] or the [[20-20-20 rule]] are useful to avoid a lock up of the ciliary muscle.
==Videos==
{{#ev:youtube|eW4GlNrzZmw}}

==References==
{{reflist}}

== See also ==
* [[20-20-20 rule]]
* [[Low myopia]]
* [[Strain Awareness]]

[[Category:Articles]]
[[Category:Eye conditions]]

Guide:Start your improvement here

2021-09-08T19:06:12Z

Shaerah:

[[File:EMBoxLogoTransparent.png|right|200px]]
'''Welcome to EndMyopia''', the prime place on the internet for regaining your own natural eyesight and reversing your [[myopia]].

'''EndMyopia isn't a simple program of steps. This page is just the entrance to the rabbit hole.''' Nobody here can tell you how well your eyes will react to a specific change, or what glasses are right for your eyes and your vision habits and your work requirements, we can just give you the tools to understand your own eyesight, what causes myopia progression and how to stop and reverse it.

==The Beginning Steps - Stop Myopia Progression==
# Measure your eyes - you can start with a professional refraction, but you should also learn to measure your own vision at home.
#* If your refraction is better than -10, the [[Measurement#cm_Measurement|cm measurement]] is easy to do and compare values. The cm measurement measures your myopia.
#* The [[Snellen chart]] measures all the combined factors of [[Visual acuity]] and is necessary for checking if your vision meets the legal requirements in your jurisdiction for driving.
#* Measuring your myopia and visual acuity regularly will tell you when the steps you are taking are working.
# Take breaks from near work (Follow the [[3 hour rule]] or the [[20-20-20 rule]] for starters)
# Don't wear glasses for near work if you don't need them.<ref>[https://endmyopia.org/day-57-myopia-progression-the-one-thing-you-have-to-stop-doing Myopia Progression: The One Thing You Have To Stop Doing]</ref>
# Get separate glasses for near work if you do need them. We call these [[Differentials]] if your doctor is willing to prescribe them, he may call them computer glasses or reading glasses.<ref>[https://endmyopia.org/day-67-differential-glasses-for-close-up-use Differential Glasses for CLOSE-UP Use]</ref>
# Give this a few weeks, you may be able to release [[Pseudomyopia]] with these steps alone, which will change your eye measurement that you will base your next pairs of glasses on.

==Time to Learn==
[[File:Cute cat with glasses and tie reading laptop.gif|right]]
Experience has shown many times that without adequate knowledge of the process, people are really unlikely to make any improvements in their eyesight. There is always more to learn about vision improvement, and you should not be afraid to spend significant amounts of time reading the resources already available to you. Arm yourself with knowledge to deal with any bumps in the road that come your way. The community won't answer your medical questions or diopter specific questions, take medical questions to your doctor, and do your own work to understand your specific diopter needs.
# Get the [[seven day free email guide]] - This is a must, if you ask a question in the community that's answered in this guide, your thread will quite possibly be closed by a moderator.
# Consult the [https://endmyopia.org/faqs/ Blog Frequently Asked Questions] and [[Frequently Asked Questions| Wiki Frequently Asked Questions]]
# Read the [{{em}} the blog]
## Hover over (with your mouse) “Blog and How-to’s” and check the “Eyesight How-To’s” and any other sections relevant to you.
## Search the blog. Do you know how to search the [https://endmyopia.org/ blog]? Hit the 🔍️ in the upper right corner and fill in the relevant search item there.
# Watch [[EndMyopia YouTube Channel]]
# Watch [[List:Community YouTubers]]
# Use the Wiki as a reference when you need an overview of a new topic.
# Read the [[Guide:How to ask for support]] then join the [[Community]].

==Future Steps - Reverse Your Myopia==

# Get slightly reduced glasses for other times when you don't need perfect vision. We call these [[normalized]]. They give a slight blur challenge at a distance. Because glasses are generally rounded off to the nearest quarter diopter, full strength lenses are likely to be slightly over prescribed even if your [[optometrist]] follows the best practices and procedures of his profession. A quarter diopter low would put your distance to blur at 4m, or about 13 feet, and allow your [[ciliary muscle]] to relax when viewing at that distance and beyond. <ref>[https://www.youtube.com/watch?v=LI9JphYXQ6A 20/50 Rule For Improving Eyesight]</ref>
# Find Active Focus, a way of getting your eyes to see slightly further than their normal distance to blur. [[Guide:How_to_find_Active_Focus|Guide: How to find Active Focus]] <ref>[https://endmyopia.org/active-focus-links/ There is a category of blog posts about Active Focus here.]</ref>
# When you're ready, do your first [[reduction]]<ref>[https://www.youtube.com/watch?v=zzrQb4pCFkQ Reduce Normalized Diopters]</ref>

==Keep Learning==
This page is just the entrance to the rabbit hole. Keep referring to the learning resources above even after you've made your first successful reductions.

You are likely to make mistakes along this journey: there is trial and error as you perfect the approach taken to improving vision. If at any time you have discomfort or disfunction in your new glasses, step back to the previous pair you were comfortable in. The basic ideas are really simple to understand, but there is a lot of nuance in how to apply them, and this can take time to understand fully.

==Beginner's Guide to Vision Improvement==
<youtube>XPIGDSY_xBs</youtube>

==See also==
* [[Student content for new members]]
* [https://www.youtube.com/watch?v=xU6mJr16huk Video Version of Getting Started]
* [https://endmyopia.org/how-to-eyesight-improve-five-steps/ How To Improve Your Eyesight: Just 5 Steps]

[[Category:Guides]]

Close-up

2021-09-07T17:16:19Z

Shaerah:

Close up work is doing any vision task at arm's length or less for an extended period of time. This includes reading, phone time, computers, needlework, and many others.

When doing close up work, wear your [[differentials]] and follow the [[3 hour rule]] or the [[20-20-20 rule]].

{{#ev:youtube|E_STOn8NjzM}}

==References==
{{reflist}}

[[Category:Articles]]

Differentials

2021-09-04T16:06:16Z

Shaerah:

[[File:Microsoft Cloud Event Dublin, upclose with graphs.jpg|thumb|Without ''differentials'', you're on the path to ever increasing prescriptions and will get nowhere with vision improvement :(]]
'''Differentials''' ([[EM:JARGON|jargon]]), (''close up'', ''computer use'' or ''diffs'') are reduced strength glasses or lenses for [[close-up|close up activity]]. They have a lower correction than your [[normalized]] lenses, the difference between them being usually between 1 and 2 [[diopters]].<ref>{{cite jake|https://endmyopia.org/faq-items/what-is-the-differential-prescription/|What is the differential prescription?}}</ref><ref name=ChooseReduction>{{cite jake|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref>

==Low Myopia==
People with myopia of -2 D and lower do not typically need to wear differentials (because with -2 D your distance till blur should be around 50 cm - far enough to see your screen with sufficient clarity). The exception being that if you have more than 1 diopter of cylinder correction you will likely need differentials to help manage directional blur. In this event you likely can reduce the cylinder correction by between .25 and .75 D and pair it with a reduction of up to 1.25 D in spherical strength for either little or no spherical (plano) correction.

==First Differentials==
The first differentials are typically 1.5 D weaker than your [[measurement]] for full distance vision. If you have -0.25 to -0.75 D of cylinder, you have the option of dropping that and having the sphere only 1.25 D weaker.

See [[Lens#How to use Contacts with EM|How to use Contacts with EM]] if you wear contacts.

==Adjusting Differentials==
Ideally your differentials give you a small amount of blur at your daily near work. The nature of your work, the distance to your work, and your [[refractive state]] and [[cylinder]] dependence are all factors in choosing your differentials. The ideal distance for near work is not closer than 50 cm. You may get your first differentials and discover you have a headache and you really shouldn't have dropped cylinder. You may find that your work is pretty close or really far and you need to adjust the strength up or down. You may find that you really need detailed vision to do your work and you'll settle for slowing progression with your differentials and do your blur challenge for improvement in your off hours. This is the first place in the program where you really need to start understanding what you're tinkering with and make personalized diopter specific choices.

==Why are differentials worn?==
The primary stimulus for [[axial elongation]] of the eyeball is [[hyperopic defocus]], which occurs when someone:
* is engaged in close-up activity
* wears more correction than needed when seeing the object that is close up.

Differentials allow the wearer to wear ''just what they need to'', to see up close. This removes the stimulus of hyperopic defocus and stops eyes from getting more myopic. In a sense, it's a [[quick fix]]. {{wink}}

It's fairly easy to stop [[lens-induced myopia]] from progressing by just wearing differentials. The axial length of the eye does not randomly change by itself; it only changes in response to [[stimulus]].

Another reason to wear differentials is to avoid [[convergence]] issues. When viewing in close proximity the position of your eyes needs to compensate by turning in, particularly when you are looking nearer than 50 cm. Doing this for long periods of time on a regular bases is likely to cause issues. Such issues are easily avoided by wearing differential correction to accommodate a larger distance.

== Habits ==
It is useful to apply the [[20-20-20 rule]] or the [[3 hour rule]] when engaging in close up (near) work.

Always be mindful to be in a good ergonomic position. Leaning in is a common issue and is something you need to be mindful to avoid.

Good ambient lighting is important because your eyes can not see as far or as well in low lighting. Natural light is best but supplement as needed.

== See also ==
* [[Guide:Reducing differentials]]
* [[Guide:Measuring with differentials]]

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

20-20-20 rule

2021-09-04T15:59:43Z

Shaerah:

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>

Endmyopia recommends even more breaks.
* Every 20 minutes, 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>

* Every 3 hours, take the longest break you can (half hour to 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>
* As you develop [[Strain Awareness]] 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.

==References==
{{Reflist}}

[[Category:Articles]]

3 hour rule

2021-09-04T15:52:11Z

Shaerah: Created page with "The 3 hour rule is a suggestion to keep a balance between near work and time spent using distance vision and reduce eye strain. This can be an effective alternative to the..."

Frequently Asked Questions/Astigmatism

2021-09-04T14:12:55Z

Shaerah: /* What if I have a lot of cylinder relative to spherical correction? */

{{FAQ boxes}}

==What is astigmatism?==
{{main|Astigmatism}}
Astigmatism is myopia in a specific [[axis]] of the eye, as opposed to myopia for the whole of the eye.
==Is astigmatism genetic?==
In 99% of cases, no - astigmatism is [[lens-induced myopia|induced]]. Actual genetic astigmatism is incredibly rare.
==Can you reverse astigmatism?==
'''Yes.''' Many participants have been able to reduce their astigmatism correction.
{{#ev:youtube|BcZEaVyhp9w}}
==How do I know if I have astigmatism?==
If you have a [[prescription]] from an [[optometrist]], look for [[Cylinder]] or CYL. The Cylinder value is your astigmatism. The [[axis]] value is the plane in which the astigmatism is present.

Blog post: [https://endmyopia.org/test-need-astigmatism-correction-normalized-prescriptions/ Topic: How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)]

==Less than 1 diopter of CYL==
In the majority of cases, you can ditch astigmatism correction entirely if it's under one diopter.
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=126&end=164}}

==More than 1 diopter of CYL==
===What do I do for close-up?===

Blog post: [https://endmyopia.org/how-to-choose-a-differential-prescription-if-you-have-high-astigmatism Topic: How to choose a Differential Prescription if You Have High Astigmatism] <br />
Blog post: [https://endmyopia.org/pro-topic-addressing-1-diopter-astigmatism-for-close-up/Pro <s>Topic: Addressing > 1 Diopter Astigmatism For Close-Up</s>] (No content; video is private.)

{{#ev:youtube|https://www.youtube.com/watch?v=zzgYNQGMxpM|||||start=75}}
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=165}}
===What if I have high cylinder and low myopia?===

Blog post: [https://endmyopia.org/qa-high-astigmatism-low-myopia-sph-to-cyl-ratio-control/ Topic: (Q&A) High Astigmatism, Low Myopia – Sph. To Cyl. Ratio Control]

Frequently Asked Questions/Astigmatism

2021-09-04T14:11:40Z

Shaerah: /* High Astigmatism, Low Myopia */

{{FAQ boxes}}

==What is astigmatism?==
{{main|Astigmatism}}
Astigmatism is myopia in a specific [[axis]] of the eye, as opposed to myopia for the whole of the eye.
==Is astigmatism genetic?==
In 99% of cases, no - astigmatism is [[lens-induced myopia|induced]]. Actual genetic astigmatism is incredibly rare.
==Can you reverse astigmatism?==
'''Yes.''' Many participants have been able to reduce their astigmatism correction.
{{#ev:youtube|BcZEaVyhp9w}}
==How do I know if I have astigmatism?==
If you have a [[prescription]] from an [[optometrist]], look for [[Cylinder]] or CYL. The Cylinder value is your astigmatism. The [[axis]] value is the plane in which the astigmatism is present.

Blog post: [https://endmyopia.org/test-need-astigmatism-correction-normalized-prescriptions/ Topic: How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)]

==Less than 1 diopter of CYL==
In the majority of cases, you can ditch astigmatism correction entirely if it's under one diopter.
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=126&end=164}}

==More than 1 diopter of CYL==
===What do I do for close-up?===

Blog post: [https://endmyopia.org/how-to-choose-a-differential-prescription-if-you-have-high-astigmatism Topic: How to choose a Differential Prescription if You Have High Astigmatism] <br />
Blog post: [https://endmyopia.org/pro-topic-addressing-1-diopter-astigmatism-for-close-up/Pro <s>Topic: Addressing > 1 Diopter Astigmatism For Close-Up</s>] (No content; video is private.)

{{#ev:youtube|https://www.youtube.com/watch?v=zzgYNQGMxpM|||||start=75}}
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=165}}
===What if I have a lot of cylinder relative to spherical correction?===

Blog post: [https://endmyopia.org/qa-high-astigmatism-low-myopia-sph-to-cyl-ratio-control/ Topic: (Q&A) High Astigmatism, Low Myopia – Sph. To Cyl. Ratio Control]

Frequently Asked Questions/Astigmatism

2021-09-04T14:08:51Z

Shaerah: /* More than 1 diopter of CYL */

{{FAQ boxes}}

==What is astigmatism?==
{{main|Astigmatism}}
Astigmatism is myopia in a specific [[axis]] of the eye, as opposed to myopia for the whole of the eye.
==Is astigmatism genetic?==
In 99% of cases, no - astigmatism is [[lens-induced myopia|induced]]. Actual genetic astigmatism is incredibly rare.
==Can you reverse astigmatism?==
'''Yes.''' Many participants have been able to reduce their astigmatism correction.
{{#ev:youtube|BcZEaVyhp9w}}
==How do I know if I have astigmatism?==
If you have a [[prescription]] from an [[optometrist]], look for [[Cylinder]] or CYL. The Cylinder value is your astigmatism. The [[axis]] value is the plane in which the astigmatism is present.

Blog post: [https://endmyopia.org/test-need-astigmatism-correction-normalized-prescriptions/ Topic: How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)]

==Less than 1 diopter of CYL==
In the majority of cases, you can ditch astigmatism correction entirely if it's under one diopter.
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=126&end=164}}

==More than 1 diopter of CYL==
===What do I do for close-up?===

Blog post: [https://endmyopia.org/how-to-choose-a-differential-prescription-if-you-have-high-astigmatism Topic: How to choose a Differential Prescription if You Have High Astigmatism] <br />
Blog post: [https://endmyopia.org/pro-topic-addressing-1-diopter-astigmatism-for-close-up/Pro <s>Topic: Addressing > 1 Diopter Astigmatism For Close-Up</s>] (No content; video is private.)

{{#ev:youtube|https://www.youtube.com/watch?v=zzgYNQGMxpM|||||start=75}}
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=165}}
===High Astigmatism, Low Myopia===

Blog post: [https://endmyopia.org/qa-high-astigmatism-low-myopia-sph-to-cyl-ratio-control/ Topic: (Q&A) High Astigmatism, Low Myopia – Sph. To Cyl. Ratio Control]

Frequently Asked Questions/Astigmatism

2021-09-04T13:43:29Z

Shaerah: /* What do I do for close-up? */

Frequently Asked Questions/Astigmatism

2021-09-04T13:28:18Z

Shaerah: /* Less than 1 diopter of CYL */

{{FAQ boxes}}

==What is astigmatism?==
{{main|Astigmatism}}
Astigmatism is myopia in a specific [[axis]] of the eye, as opposed to myopia for the whole of the eye.
==Is astigmatism genetic?==
In 99% of cases, no - astigmatism is [[lens-induced myopia|induced]]. Actual genetic astigmatism is incredibly rare.
==Can you reverse astigmatism?==
'''Yes.''' Many participants have been able to reduce their astigmatism correction.
{{#ev:youtube|BcZEaVyhp9w}}
==How do I know if I have astigmatism?==
If you have a [[prescription]] from an [[optometrist]], look for [[Cylinder]] or CYL. The Cylinder value is your astigmatism. The [[axis]] value is the plane in which the astigmatism is present.

Blog post: [https://endmyopia.org/test-need-astigmatism-correction-normalized-prescriptions/ Topic: How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)]

==Less than 1 diopter of CYL==
In the majority of cases, you can ditch astigmatism correction entirely if it's under one diopter.
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=126&end=164}}

==More than 1 diopter of CYL==
===What do I do for close-up?===
Blog post: [https://endmyopia.org/pro-topic-addressing-1-diopter-astigmatism-for-close-up/Pro Topic: Addressing > 1 Diopter Astigmatism For Close-Up] (No content; video is private.)

{{#ev:youtube|https://www.youtube.com/watch?v=zzgYNQGMxpM|||||start=75}}
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=165}}

Frequently Asked Questions/Astigmatism

2021-09-04T13:25:40Z

Shaerah: /* What do I do for close-up? */

{{FAQ boxes}}

==What is astigmatism?==
{{main|Astigmatism}}
Astigmatism is myopia in a specific [[axis]] of the eye, as opposed to myopia for the whole of the eye.
==Is astigmatism genetic?==
In 99% of cases, no - astigmatism is [[lens-induced myopia|induced]]. Actual genetic astigmatism is incredibly rare.
==Can you reverse astigmatism?==
'''Yes.''' Many participants have been able to reduce their astigmatism correction.
{{#ev:youtube|BcZEaVyhp9w}}
==How do I know if I have astigmatism?==
If you have a [[prescription]] from an [[optometrist]], look for [[Cylinder]] or CYL. The Cylinder value is your astigmatism. The [[axis]] value is the plane in which the astigmatism is present.

Blog post: [https://endmyopia.org/test-need-astigmatism-correction-normalized-prescriptions/ Topic: How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)]

==Less than 1 diopter of CYL==
In the majority of cases, you can ditch astigmatism correction entirely if it's under one diopter.
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=126}}
==More than 1 diopter of CYL==
===What do I do for close-up?===
Blog post: [https://endmyopia.org/pro-topic-addressing-1-diopter-astigmatism-for-close-up/Pro Topic: Addressing > 1 Diopter Astigmatism For Close-Up] (No content; video is private.)

{{#ev:youtube|https://www.youtube.com/watch?v=zzgYNQGMxpM|||||start=75}}
{{#ev:youtube|https://www.youtube.com/watch?v=NAqxMPZT8HU|||||start=165}}

Frequently Asked Questions/Astigmatism

2021-09-04T13:01:05Z

Shaerah: /* How do I know if I have astigmatism? */

Differentials

2021-07-15T03:16:50Z

Shaerah: copyedit

[[File:Microsoft Cloud Event Dublin, upclose with graphs.jpg|thumb|Without ''differentials'', you're on the path to ever increasing prescriptions and will get nowhere with vision improvement :(]]
'''Differentials''' ([[EM:JARGON|jargon]]), (''close up'', ''computer use'' or ''diffs'') are reduced strength glasses or lenses for [[close-up|close up activity]]. They have a lower correction than your [[normalized]] lenses, the difference between them being usually between 1 and 2 [[diopters]].<ref>{{cite jake|https://endmyopia.org/faq-items/what-is-the-differential-prescription/|What is the differential prescription?}}</ref><ref name=ChooseReduction>{{cite jake|https://endmyopia.org/choose-reduced-glasses-prescription-differential-close-friendly-glasses/|How To Choose A Reduced Glasses Prescription (Differential / Close-Up Friendly Glasses)}}</ref>

==Low Myopia==
People with myopia of -2 D and lower do not typically need to wear differentials (because with -2 D your distance till blur should be around 50 cm - far enough to see your screen with sufficient clarity). The exception being that if you have more than 1 diopter of cylinder correction you will likely need differentials to help manage directional blur. In this event you likely can reduce the cylinder correction by between .25 and .75 D and pair it with a reduction of up to 1.25 D in spherical strength for either little or no spherical (plano) correction.

==First Differentials==
The first differentials are typically 1.5 D weaker than your [[measurement]] for full distance vision. If you have -0.25 to -0.75 D of cylinder, you have the option of dropping that and having the sphere only 1.25 D weaker.

See [[Lens#How to use Contacts with EM|How to use Contacts with EM]] if you wear contacts.

==Adjusting Differentials==
Ideally your differentials give you a small amount of blur at your daily near work. The nature of your work, the distance to your work, and your [[refractive state]] and [[cylinder]] dependence are all factors in choosing your differentials. The ideal distance for near work is not closer than 50 cm. You may get your first differentials and discover you have a headache and you really shouldn't have dropped cylinder. You may find that your work is pretty close or really far and you need to adjust the strength up or down. You may find that you really need detailed vision to do your work and you'll settle for slowing progression with your differentials and do your blur challenge for improvement in your off hours. This is the first place in the program where you really need to start understanding what you're tinkering with and make personalized diopter specific choices.

==Why are differentials worn?==
The primary stimulus for [[axial elongation]] of the eyeball is [[hyperopic defocus]], which occurs when someone:
* is engaged in close-up activity
* wears more correction than needed when seeing the object that is close up.

Differentials allow the wearer to wear ''just what they need to'', to see up close. This removes the stimulus of hyperopic defocus and stops eyes from getting more myopic. In a sense, it's a [[quick fix]]. {{wink}}

It's fairly easy to stop [[lens-induced myopia]] from progressing by just wearing differentials. The axial length of the eye does not randomly change by itself; it only changes in response to [[stimulus]].

Another reason to wear differentials is to avoid [[convergence]] issues. When viewing in close proximity the position of your eyes needs to compensate by turning in, particularly when you are looking nearer than 50 cm. Doing this for long periods of time on a regular bases is likely to cause issues. Such issues are easily avoided by wearing differential correction to accommodate a larger distance.

== Habits ==
It's useful to apply the [[20-20-20 rule]] when engaging in close up. Alternatively a 1-hour period of distance vision following 3 hours of near work can be effective.

Always be mindful to be in a good ergonomic position. Leaning in is a common issue and is something you need to be mindful to avoid.

Good ambient lighting is important because your eyes can not see as far or as well in low lighting. Natural light is best but supplement as needed.

== See also ==
* [[Guide:Reducing differentials]]
* [[Guide:Measuring with differentials]]

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

Reduced lenses

2021-07-15T03:00:29Z

Shaerah: Created page with "Glasses or contact lenses that have less power than full correction. ==Normalized== With EndMyopia, 0.25 diopters less than full correction is a typical reduced lens power f..."

Glasses or contact lenses that have less power than full correction.

==Normalized==
With EndMyopia, 0.25 diopters less than full correction is a typical reduced lens power for [[normalized]] lenses.

==Differentials==
1.00 - 2.00 (1.50) diopters less than full correction is generally a useful reduced lens power for [[differentials]] worn in [[close-up]] activity.

Hyperopic defocus

2021-07-14T03:06:55Z

Shaerah: copyedit

'''Hyperopic defocus''' is the technical term used by research papers to describe the [[blur#Myopic_vs_Hyperopic_Blur|blur]] caused by having the image focused behind the retina. It would normally be resolved automatically by [[accommodation]], but for objects closer than the [[near point]], the lens is not strong enough to do so.

Studies show that it is a stimulus which, over time, can cause [[axial elongation]].

==See also==
* [[Hyperopia]]
* [[Myopic defocus]]

==References==
{{reflist}}