Endmyopia Wiki - User contributions [en]

Lens Complexity

2021-04-22T19:27:48Z

Deadpan:

A simple pair of glasses has spherical lenses of similar power. If one eye is weaker than the other, or you have [[astigmatism]], lenses to compensate for that are more complex. EM recommends<ref name="EndMyopia Blog: How To Reduce Prescription Complexity">{{Cite web |title=Pro Topic: How To Reduce Prescription Complexity - Endmyopia |url=https://endmyopia.org/pro-topic-how-to-reduce-prescription-complexity/ |website=endmyopia.org |access-date=2020-06-05}}</ref><ref name="EndMyopia Blog: Reducing Potential Harmful Prescription Complexity">{{Cite web |title=Reducing Potential Harmful Prescription Complexity |url=https://endmyopia.org/eyesight-health-reducing-potential-harmful-prescription-complexity/ |website=endmyopia.org |access-date=2020-06-05}}</ref> that you start with small and even [[spherical reductions]] first, then after you've accomplished a few of those, then work on reducing complexity.

[[Guide:Reducing lens complexity]]
==References==
{{reflist}}

[[Category:Articles]]

NITM

2020-06-21T05:20:50Z

Deadpan: Redirected page to Pseudomyopia

#REDIRECT [[Pseudomyopia]]

Guide:Resolving double vision

2020-06-17T05:47:48Z

Deadpan: /* What's happening */ EndMyopia:Optometry degrees optional

{{Under_construction}}

[[File:double-vision-blur.png|right|600px]]

Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].

==What's happening==
The eyes are designed to optimize vision, adapting based on environmental feedback.{{citation needed}} This is a normal thing that the eyes do from early childhood.{{citation needed}} The eyeball changes shape and size to optimize the [[focal plane]] while the [[visual cortex]] interprets the signal.{{citation needed}} Returning from [[lens-induced myopia]] involves a drastic change to the [[focal plane]], even when it is carried out over a long period of time; the change is larger than anything the [[visual cortex]] would have encountered in nature, without lenses.

The change to the size and shape of the eyeball, in response to [[blur]], happens relatively quickly. The [[double vision]] is a lag-period where the [[visual cortex]] is learning to interpret the changed signal it is receiving; it is learning to "align" the images.

Because the changes to the eye and the brain don't occur at the same pace progression of visual perception is generally experienced as:

'''Blur > Double Vision > Clarity'''

Sometimes [[double vision]] is difficult to resolve and the visual perception may cycle between [[double vision]] and clarity a few times over weeks or months before coming to rest at clarity, especially at [[lower diopters]].

TODO: Add reference to https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

==Fusing the images==

==When to reduce?==

==References==
{{reflist}}

==See also==

[[Category:Guides]]

Focal plane

2020-06-17T05:39:20Z

Deadpan: Redirected page to Focal length

#REDIRECT [[focal length]]

Guide:Resolving double vision

2020-06-17T05:38:40Z

Deadpan:

{{Under_construction}}

[[File:double-vision-blur.png|right|600px]]

Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].

==What's happening==
The eyes are designed to optimize vision, adapting based on environmental feedback.{{citation needed}} This is a normal thing that the eyes do from early childhood.{{citation needed}} The eyeball changes shape and size to optimize the [[focal plane]] while the [[visual cortex]] interprets the signal.{{citation needed}} Returning from [[lens-induced myopia]] involves a drastic change to the [[focal plane]], even when it is carried out over a long period of time; the change is larger than anything the [[visual cortex]] would have encountered in nature, without lenses.

The change to the size and shape of the eyeball, in response to [[myopic defocus]], happens relatively quickly. The [[double vision]] is a lag-period where the [[visual cortex]] is learning to interpret the changed signal it is receiving; it is learning to "align" the images.

Because the changes to the eye and the brain don't occur at the same pace progression of visual perception is generally experienced as:

'''Blur > Double Vision > Clarity'''

Sometimes [[double vision]] is difficult to resolve and the visual perception may cycle between [[double vision]] and clarity a few times over weeks or months before coming to rest at clarity, especially at [[lower diopters]].

TODO: Add reference to https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

==Fusing the images==

==When to reduce?==

==References==
{{reflist}}

==See also==

[[Category:Guides]]

Hyperopic defocus

2020-06-17T05:34:58Z

Deadpan:

{{Under_construction}}
'''Hyperopic defocus''' 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 [[hyperopia]] (far-sightedness), the lens is not strong enough to do (for near objects).

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

==See also==
[[Myopic defocus]]

==References==
{{reflist}}

Guide:Resolving double vision

2020-06-17T05:33:35Z

Deadpan: /* What's happening */ error correction: hyperopic defocus -> myopic defocus

{{Under_construction}}

[[File:double-vision-blur.png|right|600px]]

Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].

==What's happening==
The eyes are designed to optimize vision, adapting based on environmental feedback.{{citation needed}} This is a normal thing that the eyes do from early childhood.{{citation needed}} The eyeball changes shape and size to optimize the [[focal plane]] while the [[visual cortex]] interprets the signal.{{citation needed}} Returning from [[lens induced myopia]] involves a drastic change to the [[focal plane]], even when it is carried out over a long period of time; the change is larger than anything the [[visual cortex]] would have encountered in nature, without lenses.

The change to the size and shape of the eyeball, in response to [[myopic defocus]], happens relatively quickly. The [[double vision]] is a lag-period where the [[visual cortex]] is learning to interpret the changed signal it is receiving; it is learning to "align" the images.

Because the changes to the eye and the brain don't occur at the same pace progression of visual perception is generally experienced as:

'''Blur > Double Vision > Clarity'''

Sometimes [[double vision]] is difficult to resolve and the visual perception may cycle between [[double vision]] and clarity a few times over weeks or months before coming to rest at clarity, especially at [[lower diopters]].

TODO: Add reference to https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

==Fusing the images==

==When to reduce?==

==References==
{{reflist}}

==See also==

[[Category:Guides]]

Guide:Resolving double vision

2020-06-17T05:27:49Z

Deadpan: /* What's happening */ Added a basic explanation, needs expansion and citations.

{{Under_construction}}

[[File:double-vision-blur.png|right|600px]]

Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].

==What's happening==
The eyes are designed to optimize vision, adapting based on environmental feedback.{{citation needed}} This is a normal thing that the eyes do from early childhood.{{citation needed}} The eyeball changes shape and size to optimize the [[focal plane]] while the [[visual cortex]] interprets the signal.{{citation needed}} Returning from [[lens induced myopia]] involves a drastic change to the [[focal plane]], even when it is carried out over a long period of time; the change is larger than anything the [[visual cortex]] would have encountered in nature, without lenses.

The change to the size and shape of the eyeball, in response to [[hyperopic defocus]], happens relatively quickly. The [[double vision]] is a lag-period where the [[visual cortex]] is learning to interpret the changed signal it is receiving; it is learning to "align" the images.

Because the changes to the eye and the brain don't occur at the same pace progression of visual perception is generally experienced as:

'''Blur > Double Vision > Clarity'''

Sometimes [[double vision]] is difficult to resolve and the visual perception may cycle between [[double vision]] and clarity a few times over weeks or months before coming to rest at clarity, especially at [[lower diopters]].

TODO: Add reference to https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

==Fusing the images==

==When to reduce?==

==References==
{{reflist}}

==See also==

[[Category:Guides]]

Guide:Resolving double vision

2020-06-17T05:03:22Z

Deadpan: Added an (edited) image from the blog comparing double vision and blur.

Guide:The Last Diopter

2020-06-17T04:56:01Z

Deadpan: Shrank the gif a little

{{Under_construction}}
[[File:Milhouse-now-girls.gif|right|400px]]
The last diopter: it's a grind.
Hopefully you've already [[Guide:Reducing lens complexity|equalized your lenses]].
{{clear}}
==Transitioning to no glasses==
Begin modulating your walks with some time spent wearing 20/20 crystal clear correction and some time spent with no correction while practicing [[active focus]] and [[Guide:Resolving double vision|double vision resolve]].

As the months pass, spend more of the time without lenses and less of the time with lenses.

==When are glasses no longer needed==

One day, you'll put your glasses back on and not see any improvement in clarity. You're done with normalized lenses. (TODO: cite an EM source for this)

==Final Stretch: Improvement without any lenses==
TODO: talk about how to improve, now that you have no lenses to crutch on.

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

File:Double-vision-blur.png

2020-06-17T04:52:03Z

Deadpan: Source: https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

== Summary ==
Source: https://endmyopia.org/pro-topic-double-vision-ruining-your-life/
== Licensing ==
{{jake-copyright}}

Guide:Resolving double vision

2020-06-17T04:43:03Z

Deadpan: /* When is it safe to lower the prescription? */ Not a "prescription"

{{Under_construction}}
Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].
==What's happening==

Blur > Double Vision > Clarity

TODO: Add reference to https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

==Fusing the images==

==When to reduce?==

==References==
{{reflist}}

==See also==

[[Category:Guides]]

Guide:Reducing lens complexity

2020-06-17T04:40:55Z

Deadpan: /* How to reduce lens complexity */ Formatted example explanations as sentences.

{{Under_construction}}

TODO: this article needs to be expanded for edge cases like already low diopters.

==When to reduce lens complexity==

[[Lens complexity]] is best reduced before getting into the [[low diopters]] range. Ideally, both eyes would be equal before the normalized correction reaches -1.5 [[diopters]].{{citation needed}}

==How to reduce lens complexity==

'''Make your first reduction a simple [[spherical]] reduction. This will teach you the basics of the [[EndMyopia]] methods.'''

There are two types of reductions:

* <div>A simple reduction is a 0.25 [[diopter]] drop in lense power for both eyes, simultaneously</div>
* <div>An equalizing reduction is a 0.25 [[diopter]] drop in lense power for one eye, the eye with greater correction (more negative)</div>

An equalizing reduction is done to bring the eyes closer to having the same level of correction.

Either type of reduction can be applied to [[spherical]] power or [[cylindrical]] power.

'''There are four rules for reducing complexity:'''
# <div>Alternate types of reductions. Simple > Equalizing > Simple > Equalizing...</div>
# <div>Change only spherical or only cylindrical and never both simultaneously.</div>
# <div>For an equalizing reduction, change both differential lenses and normalized lenses simultaneously to keep the [[focal planes]] in sync.</div>
# <div>For a simple reduction, change differential lenses a few weeks after normalized lenses to keep changes to [[focal planes]] to a minimum.</div>

'''A note on rule 3 and rule 4:''' Keeping focal planes in sync is a higher priority than keeping changes to focal planes to a minimum, thus rule 3 exists.

{| class="wikitable" style="text-align:center;"
|+ Example Spherical Reduction Schedule
|-
! style="text-align:left;" | Reduction Type
! colspan="2" | Normalized
! colspan="2" | Differentials
! style="text-align:left;" | Explanation
|-
| style="text-align:left;" |
| Left
| Right
| Left
| Right
| style="text-align:left;" |
|-
| rowspan="2" style="text-align:left;" |
| -3.50
| -4.00
| -2.25
| -2.75
| style="text-align:left;" | This is the '''starting point'''.
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|-
| rowspan="4" | Simple
| -3.25
| -3.75
|
|
| style="text-align:left;" | Perform normalized reduction.
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| (rule 4)
|-
|
|
| -2.00
| -2.50
| style="text-align:left;" | Perform differential reduction.
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| rowspan="2" | Equalizing
| -3.25
| -3.50
| -2.00
| -2.25
| style="text-align:left;" | Both norms and diffs are reduced simultaneously. (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center; font-weight:bold;" | wait 8 - 16 weeks
|
|-
| rowspan="4" | Simple
| -3.00
| -3.25
|
|
| style="text-align:left;" | Perform normalized reduction.
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| (rule 4)
|-
|
|
| -1.75
| -2.00
| style="text-align:left;" | Perform differential reduction.
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| rowspan="2" | Equalizing
| -3.00
| -3.00
| -1.75
| -1.75
| style="text-align:left;" | Both norms and diffs are reduced simultaneously. (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center; font-weight:bold;" | wait 8 - 16 weeks
|
|}

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:Reducing lens complexity

2020-06-16T20:34:51Z

Deadpan: /* When to reduce lens complexity */

{{Under_construction}}

TODO: this article needs to be expanded for edge cases like already low diopters.

==When to reduce lens complexity==

[[Lens complexity]] is best reduced before getting into the [[low diopters]] range. Ideally, both eyes would be equal before the normalized correction reaches -1.5 [[diopters]]. (TODO: cite an EM source for this)

==How to reduce lens complexity==

'''Make your first reduction a simple [[spherical]] reduction. This will teach you the basics of the [[EndMyopia]] methods.'''

There are two types of reductions:

* <div>A simple reduction is a 0.25 [[diopter]] drop in lense power for both eyes, simultaneously</div>
* <div>An equalizing reduction is a 0.25 [[diopter]] drop in lense power for one eye, the eye with greater correction (more negative)</div>

An equalizing reduction is done to bring the eyes closer to having the same level of correction.

Either type of reduction can be applied to [[spherical]] power or [[cylindrical]] power.

'''There are four rules for reducing complexity:'''
# <div>Alternate types of reductions. Simple > Equalizing > Simple > Equalizing...</div>
# <div>Change only spherical or only cylindrical and never both simultaneously.</div>
# <div>For an equalizing reduction, change both differential lenses and normalized lenses simultaneously to keep the [[focal planes]] in sync.</div>
# <div>For a simple reduction, change differential lenses a few weeks after normalized lenses to keep changes to [[focal planes]] to a minimum.</div>

'''A note on rule 3 and rule 4:''' Keeping focal planes in sync is a higher priority than keeping changes to focal planes to a minimum, thus rule 3 exists.

{| class="wikitable" style="text-align:center;"
|+ Example Spherical Reduction Schedule
|-
! style="text-align:left;" | Reduction Type
! colspan="2" | Normalized
! colspan="2" | Differentials
! style="text-align:left;" | Explanation
|-
| style="text-align:left;" |
| Left
| Right
| Left
| Right
| style="text-align:left;" |
|-
| rowspan="2" style="text-align:left;" |
| -3.50
| -4.00
| -2.25
| -2.75
| style="text-align:left;" | Starting point
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|-
| rowspan="4" | Simple
| -3.25
| -3.75
|
|
| style="text-align:left;" | perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| (rule 4)
|-
|
|
| -2.00
| -2.50
| style="text-align:left;" | perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| rowspan="2" | Equalizing
| -3.25
| -3.50
| -2.00
| -2.25
| style="text-align:left;" | both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center; font-weight:bold;" | wait 8 - 16 weeks
|
|-
| rowspan="4" | Simple
| -3.00
| -3.25
|
|
| style="text-align:left;" | perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| (rule 4)
|-
|
|
| -1.75
| -2.00
| style="text-align:left;" | perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| rowspan="2" | Equalizing
| -3.00
| -3.00
| -1.75
| -1.75
| style="text-align:left;" | both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center; font-weight:bold;" | wait 8 - 16 weeks
|
|}

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:Reducing lens complexity

2020-06-16T17:12:22Z

Deadpan: /* How to reduce lens complexity */ Added a reduction type column to the example table.

{{Under_construction}}

TODO: this article needs to be expanded for edge cases like already low diopters.

==When to reduce lens complexity==

[[Lens complexity]] is best reduced before getting into the [[low diopters]] range. Ideally, both eyes would be equal before -1.5 [[diopters]]. (TODO: cite an EM source for this)

==How to reduce lens complexity==

'''Make your first reduction a simple [[spherical]] reduction. This will teach you the basics of the [[EndMyopia]] methods.'''

There are two types of reductions:

* <div>A simple reduction is a 0.25 [[diopter]] drop in lense power for both eyes, simultaneously</div>
* <div>An equalizing reduction is a 0.25 [[diopter]] drop in lense power for one eye, the eye with greater correction (more negative)</div>

An equalizing reduction is done to bring the eyes closer to having the same level of correction.

Either type of reduction can be applied to [[spherical]] power or [[cylindrical]] power.

'''There are four rules for reducing complexity:'''
# <div>Alternate types of reductions. Simple > Equalizing > Simple > Equalizing...</div>
# <div>Change only spherical or only cylindrical and never both simultaneously.</div>
# <div>For an equalizing reduction, change both differential lenses and normalized lenses simultaneously to keep the [[focal planes]] in sync.</div>
# <div>For a simple reduction, change differential lenses a few weeks after normalized lenses to keep changes to [[focal planes]] to a minimum.</div>

'''A note on rule 3 and rule 4:''' Keeping focal planes in sync is a higher priority than keeping changes to focal planes to a minimum, thus rule 3 exists.

{| class="wikitable" style="text-align:center;"
|+ Example Spherical Reduction Schedule
|-
! style="text-align:left;" | Reduction Type
! colspan="2" | Normalized
! colspan="2" | Differentials
! style="text-align:left;" | Explanation
|-
| style="text-align:left;" |
| Left
| Right
| Left
| Right
| style="text-align:left;" |
|-
| rowspan="2" style="text-align:left;" |
| -3.50
| -4.00
| -2.25
| -2.75
| style="text-align:left;" | Starting point
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|-
| rowspan="4" | Simple
| -3.25
| -3.75
|
|
| style="text-align:left;" | perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| (rule 4)
|-
|
|
| -2.00
| -2.50
| style="text-align:left;" | perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| rowspan="2" | Equalizing
| -3.25
| -3.50
| -2.00
| -2.25
| style="text-align:left;" | both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center; font-weight:bold;" | wait 8 - 16 weeks
|
|-
| rowspan="4" | Simple
| -3.00
| -3.25
|
|
| style="text-align:left;" | perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| (rule 4)
|-
|
|
| -1.75
| -2.00
| style="text-align:left;" | perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| rowspan="2" | Equalizing
| -3.00
| -3.00
| -1.75
| -1.75
| style="text-align:left;" | both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center; font-weight:bold;" | wait 8 - 16 weeks
|
|}

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:Reducing lens complexity

2020-06-16T17:05:25Z

Deadpan: /* How to reduce lens complexity */

{{Under_construction}}

TODO: this article needs to be expanded for edge cases like already low diopters.

==When to reduce lens complexity==

[[Lens complexity]] is best reduced before getting into the [[low diopters]] range. Ideally, both eyes would be equal before -1.5 [[diopters]]. (TODO: cite an EM source for this)

==How to reduce lens complexity==

'''Make your first reduction a simple [[spherical]] reduction. This will teach you the basics of the [[EndMyopia]] methods.'''

There are two types of reductions:

* <div>A simple reduction is a 0.25 [[diopter]] drop in lense power for both eyes, simultaneously</div>
* <div>An equalizing reduction is a 0.25 [[diopter]] drop in lense power for one eye, the eye with greater correction (more negative)</div>

An equalizing reduction is done to bring the eyes closer to having the same level of correction.

Either type of reduction can be applied to [[spherical]] power or [[cylindrical]] power.

'''There are four rules for reducing complexity:'''
# <div>Alternate types of reductions. Simple > Equalizing > Simple > Equalizing...</div>
# <div>Change only spherical or only cylindrical and never both simultaneously.</div>
# <div>For an equalizing reduction, change both differential lenses and normalized lenses simultaneously to keep the [[focal planes]] in sync.</div>
# <div>For a simple reduction, change differential lenses a few weeks after normalized lenses to keep changes to [[focal planes]] to a minimum.</div>

'''A note on rule 3 and rule 4:''' Keeping focal planes in sync is a higher priority than keeping changes to focal planes to a minimum, thus rule 3 exists.

{| class="wikitable" style="text-align:center;"
|+ Example Spherical Reduction Schedule
|-
! colspan="2" | Normalized
! colspan="2" | Differentials
! style="text-align:left;" | Explanation
|-
| Left
| Right
| Left
| Right
| style="text-align:left;" |
|-
| -3.50
| -4.00
| -2.25
| -2.75
| style="text-align:left;" | Starting point
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|-
| -3.25
| -3.75
|
|
| style="text-align:left;" | Simple: perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| rule 4
|-
|
|
| -2.00
| -2.50
| style="text-align:left;" | Simple: perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| -3.25
| -3.50
| -2.00
| -2.25
| style="text-align:left;" | Equalizing: both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|-
| -3.00
| -3.25
|
|
| style="text-align:left;" | Simple: perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| rule 4
|-
|
|
| -1.75
| -2.00
| style="text-align:left;" | Simple: perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| -3.00
| -3.00
| -1.75
| -1.75
| style="text-align:left;" | Equalizing: both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|}

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:Reducing lens complexity

2020-06-16T17:04:46Z

Deadpan: /* How to reduce lens complexity */ Changed the example to a table.

{{Under_construction}}

TODO: this article needs to be expanded for edge cases like already low diopters.

==When to reduce lens complexity==

[[Lens complexity]] is best reduced before getting into the [[low diopters]] range. Ideally, both eyes would be equal before -1.5 [[diopters]]. (TODO: cite an EM source for this)

==How to reduce lens complexity==

'''Make your first reduction a simple [[spherical]] reduction. This will teach you the basics of the [[EndMyopia]] methods.'''

There are two types of reductions:

* <div>A simple reduction is a 0.25 [[diopter]] drop in lense power for both eyes, simultaneously</div>
* <div>An equalizing reduction is a 0.25 [[diopter]] drop in lense power for one eye, the eye with greater correction (more negative)</div>

An equalizing reduction is done to bring the eyes closer to having the same level of correction.

Either type of reduction can be applied to [[spherical]] power or [[cylindrical]] power.

'''There are four rules for reducing complexity:'''
# <div>Alternate types of reductions. Simple > Equalizing > Simple > Equalizing...</div>
# <div>Change only spherical or only cylindrical and never both simultaneously.</div>
# <div>For an equalizing reduction, change both differential lenses and normalized lenses simultaneously to keep the [[focal planes]] in sync.</div>
# <div>For a simple reduction, change differential lenses a few weeks after normalized lenses to keep changes to [[focal planes]] to a minimum.</div>

'''A note on rule 3 and rule 4:''' Keeping focal planes in sync is a higher priority than keeping changes to focal planes to a minimum, thus rule 3 exists.

{| class="wikitable" style="text-align:center;"
|+ Example Spherical Reduction Schedule
|-
! colspan="2" | Normalized
! colspan="2" | Differentials
! style="text-align:left;" | Explanation
|-
| Left
| Right
| Left
| Right
| style="text-align:left;" |
|-
| -3.50
| -4.00
| -2.25
| -2.75
| style="text-align:left;" | Starting point
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|-
| -3.25
| -3.75
|
|
| style="text-align:left;" | Simple: perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| rule 4
|-
|
|
| -2.00
| -2.50
| style="text-align:left;" | Simple: perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| -3.25
| -3.50
| -2.00
| -2.25
| style="text-align:left;" | Equalizing: both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|-
| -3.00
| -3.25
|
|
| style="text-align:left;" | Simple: perform normalized reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
| rule 4
|-
|
|
| -1.75
| -2.00
| style="text-align:left;" | Simple: perform differential reduction
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 4 - 8 weeks
|
|- style="font-weight:bold;"
| -3.00
| -3.00
| -1.75
| -1.75
| style="text-align:left;" | Equalizing: both norms and diffs are reduced simultaneously (rule 3)
|- style="text-align:left;"
| colspan="4" style="text-align:center;" | wait 8 - 16 weeks
|
|}

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

User talk:NottNott

2020-06-15T23:13:44Z

Deadpan: /* Help with formatting Guide:Reducing_lens_complexity */

{{DISPLAYTITLE:<span style="color:#e67e22">User talk:NottNott</span>}}

{{User:NottNott/notmywiki|right}}

<center>{{Talk header}}</center>
This is my talk page, where you can send me messages. Be sure to read [[EM:Talk pages]] before doing so!

==Example message==
Hello there, this is an example message. -[[User:NottNott|<span style="color:#1c662a">Nott</span>]][[User talk:NottNott|<span style="color:#2ca243">Nott</span>]] 09:23, 18 May 2020 (UTC)
:I've not used the talk feature before, just looks like a normal page with a special category -[[User:dlskidmore|<span style="color:#2ca243">Denise Skidmore</span>]]
:getting the hang of proper talk signature etiquette [[User:Dlskidmore|Dlskidmore]] ([[User talk:Dlskidmore|talk]]) 19:40, 18 May 2020 (UTC)

== reddit ==

Wouldn't 'Reddit' be cleaner then 'reddit'. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 21:56, 18 May 2020 (UTC)
:Done.

:Ended up trying to import bazillions of non-functioning Wikipedia templates like <nowiki>{{done}}</nowiki> while I was at it. Probably going to have a lot of cleaning up to do later on, I'm making such a mess. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:04, 18 May 2020 (UTC)
::{{done}}. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 22:14, 18 May 2020 (UTC)
:::Oh yeah, whatever can invoke statements like #if in templates ''also'' doesn't work. Sigh. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:15, 18 May 2020 (UTC)
:::Needs an extension for that. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:38, 18 May 2020 (UTC)

== [[Template:Navbox]] ==

Can you add getting the navbox working to your list. Articles become more co-ordinated and sensible when there is a method of overview and navigation. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 17:40, 20 May 2020 (UTC)
:Needs [https://www.mediawiki.org/wiki/Extension:Scribunto Scribunto extension] - can do this when I have access to the backend. 100% a priority when I can get around to this. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:18, 20 May 2020 (UTC)

== References ==

Can you add [[mw:Extension:Cite]]? It would allow us to cite sources. [[User:Heddy|Heddy]] ([[User talk:Heddy|talk]]) 22:09, 20 May 2020 (UTC)
:I'm not sure if you have access to the thread on the forum where I discuss the backend and configuration a little more. I'm currently waiting to get backend access to configure the MediaWiki install - the wiki is hosted on Jake's file server and I don't have FTP access at the moment. As you can imagine, there are plenty of extensions and configurations I'd like to do, and Cite will definitely be added.

:By the way [[Template:VisionStats]] is awesome. What experience do you have on other wikis? :) -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:12, 20 May 2020 (UTC)
:: I saw the thread but didn't read it thoroughly, so I thought you had full access!
:: I have been editing Wikipedia and various video game wikis for about 5 years. I can make that template even better if you add [[mw:Extension:ParserFunctions|ParserFunctions]]! [[User:Heddy|Heddy]] ([[User talk:Heddy|talk]]) 22:24, 20 May 2020 (UTC)
:::No worries, it's a doozy in that thread. Thanks for the extension suggestions, you're welcome to compile a list of extensions you want installed on the ToDo list and I'll get through it. Also, you've passed the extensive RFA process we have here, have the mop :) -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:31, 20 May 2020 (UTC)
::::Thanks, I know I'll be a great janitor! [[User:Heddy|Heddy]] ([[User talk:Heddy|talk]]) 22:33, 20 May 2020 (UTC)

=== ProveIt ===
Not sure if any of this is fixable, but ProveIt has a few foibles.
* It sometimes reverses the first and last name of the author. That one I doubt is fixable, because not everyone will use the same text formatting everywhere, so it would have to know as much as a human about names. (Although it might be able to learn more about common first and last names in other cultures than I know myself if it could do it at all.)
* The Journal template doesn't like partial dates like 2010 Dec. It wants the day, but the day isn't always known, many of the articles cite only a year or month and year. That might be fixable in the template? [[User:Dlskidmore|Dlskidmore]] ([[User talk:Dlskidmore|talk]]) 02:26, 31 May 2020 (UTC)
:{{re|Dlskidmore}} If it's last name and then first name, to my knowledge that order of words is sometimes a convention when citing clinical studies. Some use first and last, some last and first. Whatever convention being used is identical to the one Wikipedia uses, so if it's good for them hopefully it's good for us. {{smiley}}

:If you enter in, for example, December 2010 into the source date box, it worked out good for me. Check out [[User:NottNott/sandbox]] for an example of how I have done this below, at the bottom of the page. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 08:08, 31 May 2020 (UTC)

== Test ==

{{re|NottNott}} Hello? -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 11:59, 24 May 2020 (UTC)
{{re|NottSock}} Howdy -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 12:00, 24 May 2020 (UTC)

{{re|NottSock}} test -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:33, 24 May 2020 (UTC)
{{re|NottNott}} test [[User:NottSock|NottSock]] ([[User talk:NottSock|talk]]) 20:34, 24 May 2020 (UTC)

== Copy wrong ==

I won't use disney, they have a history of being agressive about protecting there content. Jake doesn't require the hassle and neither do you, [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 16:09, 26 May 2020 (UTC)
:{{re|Sam.Watson}} Take it down and delete the file then, I would. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 16:25, 26 May 2020 (UTC)

== Nott Nott Barnstar ==

{| style="border: 1px solid {{{border|gray}}}; background-color: {{{color|#fdffe7}}};"
|rowspan="2" style="vertical-align:middle;" | {{#ifeq:{{{2}}}|alt|[[File:Tireless Contributor Barnstar Hires.gif|100px]]| [[File:Tireless Contributor Barnstar.gif|100px]]}}
|rowspan="2" |
|style="font-size: x-large; padding: 0; vertical-align: middle; height: 1.1em;" | '''The Tireless Contributor Barnstar'''
|-
|style="vertical-align: middle; border-top: 1px solid gray;" | For amazing work both behind the scenes and on the Wiki. Relax, take a break and do your exam work. <big><big><big>😉</big></big></big> [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 20:04, 26 May 2020 (UTC)
|}
:{{re|Sam.Watson}} People obsess about exam work far too much! There's myopia to fix!! Thanks for the barnstar {{smiley|grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:11, 26 May 2020 (UTC)

== Sidebar. ==

'Not medical advice', you mean 'No medical advice'? [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 19:32, 28 May 2020 (UTC)
:{{re|Sam.Watson}} [[MediaWiki:Sidebar]] -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 19:33, 28 May 2020 (UTC)
::{{done}} [https://www.youtube.com/watch?v=zclSWKcTZcs I'm a ninja] -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:57, 28 May 2020 (UTC)

== Experimenting ==

I see you're having fun! [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 17:23, 29 May 2020 (UTC)
:{{re|Sam.Watson}} If you can tell me how 500 Internal Server Errors on specific pages (like this talk page) are fun, then I'll be shocked. Fixed now!! {{grin}}

:Caching is enabled across the wiki, PARTICULARLY for anonymous users. Open up incognito and start clicking on things. This uses [https://varnish-cache.org/ Varnish cache], which gives anonymous users a jet aeroplane to get around. Doesn't work for logged in wiki users, but there is another cache that I've enabled for us. I can't see it getting faster than that. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 17:49, 29 May 2020 (UTC)
:Oh yeah, and thumbnail generation bug was seemingly fictional. It was due to my browser cache, and me thinking I could clear it with Ctrl+R instaed of Ctrl+F5. Whoops. We can overwrite old files!!!! -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 17:58, 29 May 2020 (UTC)
::Nice. Insights 90 to 99% https://developers.google.com/speed/pagespeed/insights/ with https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fwiki.endmyopia.org%2Fwiki%2FEndMyopia_Wiki
::In another test image can be slow. https://www.webpagetest.org/result/200529_W2_503ae97c52f243f26dcc8989ed5413b6/3/details/#waterfall_view_step1
:: [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 18:31, 29 May 2020 (UTC)
:::{{re|Sam.Watson}} This will be a lot faster when more users roam around the wiki and generate more cached files through Varnish :) -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:42, 29 May 2020 (UTC)

== Compressed adorable kitten ==
What's up here? https://wiki.endmyopia.org/wiki/File:Adorable_cute_kitten_tapping_on_Macbook.gif [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 18:31, 29 May 2020 (UTC)
:{{re|Sam.Watson}} The fun will never end! -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:35, 29 May 2020 (UTC)
:{{re|Sam.Watson}} Should be fixed. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:37, 29 May 2020 (UTC)
::Yes, fixed now. Was that something you did, or took a while? I noticed it updated the front page image almost immediately, so that was good. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 18:38, 29 May 2020 (UTC)
:::{{re|Sam.Watson}} That one's to do with ImageMagick. Which is a false prophet to fixing image related problems by the looks of things. I disabled it, and the problem vanished. And the image thumbnailing bug was a lie, just like the cake from Portal. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:42, 29 May 2020 (UTC)

== typos ==

there were two small typos in your welcome message - '''receive''', and not recieve. If this is a standard welcoming text I suggest you correct this. Hannie. I have to figure out how to get the tilde sign onto my keyboard.
:{{re|Hannie}} {{done}}

:There should be a button in the bar with a signature looking icon if you're using the blue interface to sign off, or if you're using wikEd (grey), there will be a little button of a tilde. Either of these will give you the four tildes you need :) -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 08:02, 31 May 2020 (UTC)

:Thanks, found it.[[User:Hannie|Hannie]] ([[User talk:Hannie|talk]]) 08:09, 31 May 2020 (UTC)
::{{re|Hannie}} Two colons to reply to a single colon. {{grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 08:14, 31 May 2020 (UTC)

:::{{re|NottNott}} I will get the hang of this sooner or later.[[User:Hannie|Hannie]] ([[User talk:Hannie|talk]]) 08:20, 31 May 2020 (UTC)

::::{{re|Hannie}} You will {{grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 08:23, 31 May 2020 (UTC)

== Embed? ==

<iframe width="560" height="315" src="https://www.youtube.com/embed/tVjcYpLW59I" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 17:56, 31 May 2020 (UTC)

<youtube>tVjcYpLW59I</youtube> [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 23:51, 5 June 2020 (UTC)
:Can you add https://www.mediawiki.org/wiki/Extension:EmbedVideo for https://vimeo.com/370725217 [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 19:10, 8 June 2020 (UTC)
::{{re|Sam.Watson}} {{done}}. Deprecate [[mw:Extension:YouTube]], with no broken <nowiki><youtube></nowiki> tags. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 19:18, 8 June 2020 (UTC)
:::Is there some problem with having both? mw:Extension:YouTube is better for YouTube while mw:Extension:EmbedVideo does other video types. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 20:04, 8 June 2020 (UTC)
::::{{re|Sam.Watson}} The tags are at conflict and I don't believe they are compatible. Why would mw:Extension:YouTube necessarily be better than EmbedVideo? I can test it now. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:09, 8 June 2020 (UTC)
:::::EmbedVideo page says "Alternativly, you can also use the service id as the tag (assuming another extension isn't already using this tag)." implying that it's compatible with another extension using the tag. The EmbedVideo acts to have each video on a separate line rather then allow a second video on the same line. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 20:18, 8 June 2020 (UTC)
::::::{{re|Sam.Watson}} Okay, looks like the wiki didn't implode. Both are enabled. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:28, 8 June 2020 (UTC)
:::::::{{re|Sam.Watson}} Deprecate anyway, as per [[mw:Extension:EmbedVideo#Attributes_for_parser_tags]]. Having two different syntaxes for the same tags is gonna cause problems, and the YouTube extension is less maintained then embed video. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 21:44, 8 June 2020 (UTC)
::::::::Two different syntax's? Both support same syntax. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 21:47, 8 June 2020 (UTC)
:::::::::{{re|Sam.Watson}} I'm fine with two extensions if they actually do different things. YouTube seems inferior to EmbedVideo, especially in the resizing videos syntax department. Having two extensions enabled to do the same thing is similar to spaghetti code, best avoided early on wherever possible.

{{#ev:youtube|sUQmTqU-c_8||inline}}{{#ev:youtube|sUQmTqU-c_8||inline}}

Here's your inline video! Check the syntax. The extension is finnicky about parameters, per [[mw:Extension:EmbedVideo##ev_-_Classic_parser_tag]] -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 21:54, 8 June 2020 (UTC)
:Glad you've found a way for it to work. Two extension is not similar to spaghetti code, that's a [[wikipedia:false equivalence|false equivalence]]. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 22:06, 8 June 2020 (UTC)
::{{re|Sam.Watson}} Both extensions will parse the <nowiki><youtube></nowiki> tags. YouTube formats videos (with a worse UX from the editors perspective) through the tag itself, EmbedVideo uses the <nowiki>{{#ev}}</nowiki> template. Before you know it, half the site uses one method and half the site uses the other method, maybe mixing the two on the same article and making unneccesary calls to both extensions. People don't know what's up, gotta [[Wikipedia:KISS principle|keep it simple stupid]] -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:12, 8 June 2020 (UTC)

== Categories ==

Do we require categories? Such as [[:Category:Articles]], seems that by not having it would save on maintenance work. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 23:50, 3 June 2020 (UTC)
:{{re|Sam.Watson}} See [[User_talk:Heddy#Articles_category]]. What do you think? -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 07:43, 4 June 2020 (UTC)

== hyperopic defocus ==

{{re|NottNott}}I was just about to ask (somewhere - not sure where yet...) whether [[hyperopic defocus]] should just be made an alias of [[hyperopic blur]], but you seem to have removed my assertion that they are the same. A dictionary definition of defocus is "The blurring of a visual image" so I had assumed the defocus was simply the more technical term [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 12:01, 4 June 2020 (UTC)
:{{re|Divenal}} Not quite sure what to do here either. Jake always uses the term hyperopic defocus, and if I'm not mistaken the studies refer to that term as well. I understand that a blurry image is created as a result. I think '''Hyperopic defocus''' (hyperopic blur) would probably okay - most people who think of blur would be thinking of myopic blur, so using just blur wouldn't be accurate here. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 12:31, 4 June 2020 (UTC)
::{{re|NottNott}} I had added 'blur' not only to give the alias to the term defocus, but also to provide the hyperlink to the [[blur]] page, which also discusses the topic. (But of course that could also be done as a 'see also'). And then I noticed that [[hyperopic blur]] redirected to that section of the blur page, when it could just as easily direct to the [[Hyperopic defocus]] page. [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]])
:::{{re|Divenal}} I think the concept of blur and the concept of the stimulus that elongates the eyeball are distinct and probably deserve their own pages. Not sure what else I can add other than that :P -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 13:10, 4 June 2020 (UTC)

<s>A possible lightbulb moment... I'm starting to think that "hyperopic defocus" doesn't mean "hyperopic blur" (ie image is formed behind the retina), but actually means "introducing a hyperopic bias into the system" (pushing the focus of the relaxed eye in a hyperopic direction, ie backwards in the direction of the retina). i.e. it's just a fancy way of saying "wearing -ve lenses"</s> [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]])
:{{re|Divenal}} That sounds pretty good to me! Slightly off-topic, but remember that any small biases you put into the article will be tugged in other directions by editors in the long-term. So this sort of thing will probably even itself out in the long-term. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:36, 5 June 2020 (UTC)
:{{re|NottNott}} If it really does just mean "wearing lenses", then some of the articles on here become a bit redundant. "Lens-induced myopia is a result of hyperopic defocus" becomes "lens-induced myopia is a result of wearing lenses" which is a bit of a tautology. Also, it seems wrong to throw around a technical jargon term if not even the people familiar with this stuff actually know what it means. [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]])

No, still don't think I've got it. Started a thread over in the forum, but haven't got a satisfactory answer. How sure are you about hyperopic defocus being the main cause of lens-induced myopia ? Last thing on the thread is ''And remember defocus is only a theory''. I've put an under-construction on it since I'm not at all sure that my latest edit is correct. [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 21:52, 6 June 2020 (UTC)
:{{re|Divenal}} According to [https://endmyopia.org/faq-items/do-glasses-make-my-eyes-worse/ this blog article], hyperopic defocus is to blame. I can't say I'm really the perfect person to scrutinise over the science in the slightest, TBH. But, if an EM article says it's to blame, it's easier just to roll with that until there's a big consensus toward something else. At the end of the day, the goal of the wiki is more focused on practically improving people's eyesight and giving people an indication of the science behind things. Some EM blog posts are indicative that hyperopic defocus is the cause, and it may or may not be 100% true. I think in general though, it's better to just follow the blog for the time being for the purposes of practically getting things sorted out, although debate on the forum is always good. If there isn't a consensus on the forum for how this should work, it's better to roll with the status quo.

:By the way, sorry for forgetting to respond to your message yesterday. Got tied up {{smiley}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 21:57, 6 June 2020 (UTC)
::{{re|NottNott}} Sounds a little like [[Blind belief]] ..? My inclination would be the opposite... if the wiki states something as categorically true, and it turns out otherwise, naysayers can use it to denounce the credibility of the site as a whole. Hmm... I don't like to go too far down this road, being new here, and not yet having given much to the community... but... if this is about promoting Jake's message, then yes, fair enough, if it's Jake's opinion that this is the cause, it should be pushed. But if this is a community's wiki, then the word of the guru should not be taken as gospel, but subject to as much scrutiny as anything else. I know we disagree about the duplication to some extent, but perhaps the science in particular shouldn't be scattered about the place, but collected into one area with references to it from elsewhere. (Have a look at the ''what links here'' for the [[hyperopic defocus]] page...) I think [[Hyperopic defocus]] should just define the term (which I think is probably blur due to the image focus being beyond the retina) without repeating the mantra. The chap on the thread seemed to think it was ''''peripheral'''' hyperopic defocus that was the cause. (I should stop now - just seen a paper that hyperopic defocus ''''in the morning'''' is when it's most likely to cause elongation. (And myopic defocus in the evening is best for shortening...) [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]])
:::{{re|Divenal}} No, I agree in priniciple with what you said. There is definitely a conflict between complete scientific accuracy and practical, hands-on fix your myopia stuff. I'd always want to prioritise the latter wherever possible, so I'm fine with the status quo even if it's kind of inaccurate unless everyone can come together and agree something else.

:::'''I'm totally okay''', with removing all references to hyperopic defocus in the majority of articles. Because it's a bit too sciency anyway, and as you said there's reason to doubt {{grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 09:16, 7 June 2020 (UTC)

:{{re|NottNott}} It's vaguely interesting that [[Myopic defocus]], which is the very basis of the endmyopia improvement (via AF) doesn't even have its own page. Yet the hyperopic version is referenced with gay abandon ;-) I don't think that blog post you mentioned is claiming anything about hyperopic defocus being the primary cause of elongation. It just mentions an animal study in which it was found to induce elongation. A is found to cause B does not mean that A is the main cause of B. (But I'll look around for other references...) [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]])
::{{re|Divenal}} I'm far from the perfect science guy, to be honest. Change it :D -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 14:48, 7 June 2020 (UTC)

== Duplication ==

I seem to have a bit of an obsession about avoiding duplication - prefer to link to a definition than repeat it. OTOH it would be annoying to have to keep clicking links to jump about finding definitions, especially in explainers. I think a wiki I used to use a long time ago (twiki) had a mechanism for inlinling the text from one document into another. So that would allow the text of [[Overprescription]] to be inlined into [[Explainer:Why_early_improvements_are_so_fast]] rather than (more or less) duplicating the text. Or inline the text of [[ Axial elongation]] rather than having to jump to it. Not sure if that feature is available here. [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 12:27, 4 June 2020 (UTC)
:{{re|Divenal}} That would be possible, for instance we could have definitions to things such as Definition:Overprescription or something, then you could insert that definition into articles with <code><nowiki>{{Definition:Overprescription}}</nowiki></code>

:However, strongly recommending against it in this case. I don't think we'll be duplicating information too many times, and I think the issue will sort itself as the wiki grows older and gets more contributors. It becomes harder to directly edit pages if we transclude definitions into the page instead of just having it on the page. Also, it leads to issues as to how much to transclude into any given page - it gets pretty complicated fast. I think clicking links is part and parcel of using a resource like this, the wiki is fairly quick (hopefully even quicker soon) and I think if someone can't be bothered to click a few more links they're not bothered enough to fix their eyesight {{smiley}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 12:40, 4 June 2020 (UTC)

== Citing journals ==

Is there a simple way to cite articles ? I was going to fix up the reference at [[Blur#Myopic_vs_Hyperopic_Blur]] (and probably move it to the existing "Defocus as a stimulus for eye length changes" section), but I'm much too lazy to type in all the details by hand.
From https://en.wikipedia.org/wiki/Help:Citation_tools I found http://sumsearch.org/cite/
Visiting the article in question at https://www.spandidos-publications.com/mmr/18/1/59?text=fulltext I put the DOI code into the tool and
got something looking very plausible. Given that we want to quote lots of science to back this stuff up, is there already a recipe for doing this, or should I write it up in [[How to contribute]] ? [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 17:24, 4 June 2020 (UTC)
:{{re|Divenal}} Check out [https://www.youtube.com/watch?v=N9kQWCGeHU4 my tutorial] and the tool [https://en.wikipedia.org/wiki/Wikipedia:ProveIt ProveIt] for how to cite scientific journals.

:The update button doesn't seem to work right on the tool, but you'll notice where there's a 'Template field' with loads of code in the tool that gets updated anytime you change the fields. If you copy and paste that code inbetween the ref tags you should always be okay. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 17:43, 4 June 2020 (UTC)

::Got it... but... I usually disable javascript, so I wasn't seeing that button. Pressing it, I don't seem to get the same fields as you. But your way still seems to require pasting in title, journal, etc so it can produce the citation. The tool I found generated it all from just the DOI reference. [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]])
:::{{re|Divenal}} In that case, surround what your tool produces in <nowiki><ref></ref></nowiki> tags instead, and forget about ProveIt. Referencing is really as simple as putting the text of the reference in ref tags, that's it {{smiley}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 18:21, 4 June 2020 (UTC)

== EndMyopia ==

* "As per community consensus, the capitalisation of the name should be 'EndMyopia' in all articles for consistency."
Look at name https://www.facebook.com/groups/endmyopia/ [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 22:20, 4 June 2020 (UTC)
:{{re|Sam.Watson}} Check Discord. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 22:27, 4 June 2020 (UTC)
::[[Wikipedia:WP:NUKE]]. Powerful. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 00:13, 5 June 2020 (UTC)
:::{{re|Sam.Watson}} When thinking about who should get that tool, I'm thinking 'who won't cause me to go through 500 manual undeletions' {{smiley}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 00:15, 5 June 2020 (UTC)
::::ah, so not permanent deletions. Do you know if there is a backup of the Wiki? [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 00:20, 5 June 2020 (UTC)
:::::{{re|Sam.Watson}} I can manually back up the wiki as it is now. Need to talk to {{u|Imperial-beard}} about setting up an automated backup, which shouldn't be too hard. Just involves a few buttons in root access of cpanel I believe -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 00:24, 5 June 2020 (UTC)

== Blur Horizon ==

Either I'm very badly misunderstanding something, or your description/picture for [[Blur Horizon]] is misleading. (I'm quite happy for it to be the former, since I'm here to learn...) As per [[Distance vision]], it's less than 0.2D between a distance of 6m and infinity. Given that lenses come in 0.25D increments, it's surely impossible to get a correction accurate enough to set blur horizon at the mid-point of a distant mountain ! If the recommendation for normalised is one stop (0.25D) down from 20/20 (infinite), that would put the blur horizon at about 4m, wouldn't it ? I thought the idea was for normalised to have a little bit of blur challenge on street signs and things ? [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 09:02, 5 June 2020 (UTC)
:{{re|Divenal}} Yeah, your idea about normalised is right. You're also right when you say {{xt|Given that lenses come in 0.25D increments, it's surely impossible to get a correction accurate enough to set blur horizon at the mid-point of a distant mountain !}} It was really just following off of [https://endmyopia.org/frauenfeld-method-key-concepts-the-blur-horizon/ this blog article] which uses the same identical images, and it looks cool. You're right about the maths and all that. It's impractical and unnecessary to get increments lower than 0.25D, so it all works out. {{smiley}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 10:40, 5 June 2020 (UTC)

== Oops ==

Hmm... I've done nothing but criticise so far, have I. Sorry about that. I ought to say at least once how grateful I am for all the work you (and the others) have put into this. Hopefully not at any cost to your studies. In my day job as a software engineer, we tear into each others code changes gleefully, but of course we've worked together so long that we all know we respect each other and that none of it is personal. But I'm new here and you don't know me at all... [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 10:32, 5 June 2020 (UTC)
:{{re|Divenal}} Seriously don't worry about all of that! I'd much rather have someone tear everything to shreds and make the site a whole lot better, honestly. I'm very grateful for your contributions and don't take anything personally. My exams are done, it's relaxing until September when everything starts up again (and only then do I have exams in mid January) {{grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 10:40, 5 June 2020 (UTC)

== Sexy page ==

The layout of [[Frequently Asked Questions]] is ready brilliant. Very creative and beyond the formal layout that Wikipedia uses. On a related note, is embedding videos possible? [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 23:41, 5 June 2020 (UTC)
:{{re|Sam.Watson}} Page will be even better with some custom icons for each of the boxes.

:''rumages in magic bag'' Oh, what's this, [[mw:Extension:YouTube]]? Time to install that then. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 23:43, 5 June 2020 (UTC)

<youtube>h7QdrkU8lVE</youtube>

:{{re|Sam.Watson}} Works. Check the source! -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 23:47, 5 June 2020 (UTC)
::Outstanding! [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 23:50, 5 June 2020 (UTC)
:::{{re|Sam.Watson}} One [[Help:Video tutorial]] later... -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 23:53, 5 June 2020 (UTC)

== Copyright ==

Hi, me being complainy again. Not sure about your take on [[Legal:Copyright]]. Specifically, public domain is not the absense of any copyright claim. There's a convention that everything is copyright whether it says so or not. If you make something new and don't otherwise explicitly say so, then it *is* copyright. Copyright does expire, so Shakespeare stuff is public domain (Yay !). Some stuff is not copyright. (Equations and science theorems and things, probably.) Things like the human genome shouldn't be copyright, but I have a feeling they might be (which is really bad...)

The beautiful image on the top of the page is public domain only because you expressly said it was (via the creative commons license). So it emphatically does have a license.

And I don't think it's okay to say that it's fine to steal material material from little people since, unlike Disney, they won't come after us. (It's okay to do it. It's not okay to *say* that it's okay to do it !)

There are rules about it being okay to quote a little bit of copyright material - fair use - it is not necessary to paraphrase it. (And I don't think a naive paraphrasing is sufficient to get round copyright, since as translating to French and back shouldn't be enough, even if the exact wording changes.)

You give an example of the image of an eye. Is there a case for linking to that image, rather than uploading a copy here ? I know that means it becomes subject to the availability of the external site, which is very bad. But it does avoid issues. I did try at one point to include an image from endmyopia blog, but couldn't figure out how. I think it requires a feature to be enabled. Didn't want to copy it because, you know, I don't like duplication !

I am not a lawyer... [[User:Divenal|Divenal]] ([[User talk:Divenal|talk]]) 11:21, 7 June 2020 (UTC)
:{{re|Divenal}}The CC0 license is like the ultimate 'I allow anyone to do anything at all with this whatsoever' license. So technically the license is do whatever you like.

:Copyright policy for us is basically, we don't care if we steal memes, and copyrighted educational stuff is fair use to use. I think that's pretty reasonable. We're currently stealing Kermit the Frog from Disney on [[Help:How to contribute]].

:Without uploading copies to the wiki, we cannot format the images correctly. Check that [[Special:Upload]] is working correctly for you (should be available under tools to the left). You'll have to upload images from EM to the wiki, there's no way to format images correctly without reuploading them. It's good that you have concerns about this stuff, I'm glad somebody's doing checks over my logic because we need it. I think we successfully avoid most issues with that policy (1. memes 2. fair use educational stuff), and the net benefit from including memes on the website far surpasses any net loss from potential people suing us. The wiki is pretty non-profit looking as it is, the only financial benefits are external. Disney doesn't get a claim to loads of $$$ in damages just because we have a copyrighted meme image on the site, fairly sure it's just a cease and desist takedown notice. I think the risk is pretty low. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 11:33, 7 June 2020 (UTC)

:Check out https://www.upcounsel.com/dmca-notice, seems really handy about this stuff. {{xt|When a site owner or web host obeys your DMCA notice, this does not mean that you are going to get reimbursement}}. Serious risk of actual problems, super duper low. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 11:37, 7 June 2020 (UTC)

== Required? ==

Is this page needed [[Endmyopia.org]]. Why not link to Endmyopia.org. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 14:04, 8 June 2020 (UTC)
:{{re|Sam.Watson}} MediaWiki is very careful about not allowing automatic redirects to external links. The footer is controlled in LocalSettings.php, not System Messages (which is dumb). When I tried to get a normal link working in the footer, I wasn't very successful. I'll try again at some point, but for now the page can stay. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 14:07, 8 June 2020 (UTC)
::Is the link at the bottom of each pages required? Wikipedia doesn't have such a link. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 14:37, 8 June 2020 (UTC)
:::{{re|Sam.Watson}} I like it quite a lot. It's not required, but it's not unrequired as well, also it's a button to click to take you back to the main site, which doesn't exist without that link. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 14:38, 8 June 2020 (UTC)
== Unused? Delete. ==

* [[Terms of Use]]
* [[MediaWiki:Copyrightwarning2]]
The above seem unused. can they be deleted? [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 14:37, 8 June 2020 (UTC)
:{{re|Sam.Watson}} {{done}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 14:38, 8 June 2020 (UTC)

== Guide:Finding Active Focus fault ==

Some issue that I don't comprehend. [[Guide:Finding Active Focus]] is a redlink and also listed on [[Special:UncategorizedPages]] as blue. Is this a namespace issue? If not, can you make sense of it. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 15:00, 8 June 2020 (UTC)
:{{re|Sam.Watson}} What are you talking about? That link looks pretty blue to me... {{wink}}

:The article used to be at Guide:Finding active focus, I just moved it to Guide:Finding Active Focus. Caps! -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 15:07, 8 June 2020 (UTC)
::{{re|NottNott}} Still on [[Special:UncategorizedPages]]. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 15:09, 8 June 2020 (UTC)
:::{{re|Sam.Watson}} Give it a load of time and see if it clears out of the cache. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 15:12, 8 June 2020 (UTC)
::::{{re|NottNott}} No cache on [[Special:UncategorizedPages]], no purge at top. Still there. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 15:31, 8 June 2020 (UTC)

== Embedding ==

You don't like the embedding? Confused. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 19:39, 8 June 2020 (UTC)
:{{re|Sam.Watson}} I love the embedding. The problems are:
#The page is slow to load, not good for a 'quick loadable list'
#I'm conscious about SEO. Google will crawl that page as it's directly off of the main page, it can make a difference
#I'm unsure whether this will eat up server resources, or whether it's all just a pointer to the client's browser to fetch the video.

I'd say the best compromise is two pages. Once more YouTubers join the fold the embedded list will become insane. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 19:42, 8 June 2020 (UTC)

== Namespace ==

A quick heads up as I know you been going through namespace options. The [[Module:Namespace_detect]] page had an error of missing [[Module:Transclusion count/data/N]]. I've imported that and the error is now gone. [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 23:38, 8 June 2020 (UTC)

== Success ==

Finally emptied [[:Category:Pages with script errors]]. :dance: [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 10:16, 9 June 2020 (UTC)

== AutoWikiBrowser no longer detects site. ==

Before I was using https://wiki.endmyopia.org and AWB could find the site, now it gives an error hinting to provide path where index.php and api.php reside. Any ideas? I've tried https://wiki.endmyopia.org http://wiki.endmyopia.org https://wiki.endmyopia.org/wiki http://wiki.endmyopia.org/wiki http://wiki.endmyopia.org/wiki/ https://wiki.endmyopia.org/wiki/ [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 12:58, 10 June 2020 (UTC)
:{{re|Sam.Watson}} Is [[Special:Version]] of any use to you? Top table. I've never used AWB before. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 13:24, 10 June 2020 (UTC)
::Thanks. Correct path is https://wiki.endmyopia.org That gives an error "The given key was not present in the dictionary.", searching google [https://phabricator.wikimedia.org/T99281 learnt "contains aliases for namespaces that don't exist"]. Do we have a namespace alias for a non existing namespace? [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 14:34, 10 June 2020 (UTC)
:::{{re|Sam.Watson}} We did have aliases pointing to nonexistent namespaces. That should be fixed now. -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 14:58, 10 June 2020 (UTC)
::::Great. Have now been able to detect site and login. {{Smiley}} [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 15:20, 10 June 2020 (UTC)

== June 2020 ==
{{subst:uw-vandalism1}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 11:03, 12 June 2020 (UTC)

== Mobile view ==

Here is my mobile view. [[File:MobileView1.png|right|400px]] [[User:Sam.Watson|Sam.Watson]] ([[User talk:Sam.Watson|talk]]) 15:12, 12 June 2020 (UTC)
:{{re|Sam.Watson}} Looks good to me! -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 15:15, 12 June 2020 (UTC)

== A kitten for you! ==

[[File:Kitten in a helmet.jpg|left|150px]]
I moved the original contents of AF to the other page to make sure that it didn't get lost. I thought it might come in handy there after some adjustments...

[[User:Laurens|Laurens]] ([[User talk:Laurens|talk]]) 20:12, 12 June 2020 (UTC)
<br style="clear: both;"/>
:{{re|Laurens}} {{bigger|'''MEOW'''}}

:Try [[Special:MyPage/sandbox|your sandbox page]] in future - don't want to be breaking other articles along the way {{grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:18, 12 June 2020 (UTC)
::{{re|NottNott}} Unclear as to what I should've sandboxed. The migrated AF Guide, or the original AF stuff that was there, or even the message I send you a couple of minutes ago. ''Puzzled''

::[[User:Laurens|Laurens]] ([[User talk:Laurens|talk]]) 20:26, 12 June 2020 (UTC)
:::{{re|Laurens}} I'm saying {{diff2|11099|this change}} where the AF contents were migrated could have been put in the sandbox. It's in a link in the top right (just in case you haven't seen it, I'm sure you have). You don't want to put talk page messages in sandboxes, nobody will see them then {{grin}} -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 20:29, 12 June 2020 (UTC)

== Help with formatting Guide:Reducing_lens_complexity ==

Hey NottNott can you help my numbered lists? Either I'm missing something or this editor is misbehaving :P [[Guide:Reducing_lens_complexity]] | [[User:Deadpan|Deadpan]] ([[User talk:Deadpan|talk]]) 16:16, 15 June 2020 (UTC)
:{{re|Deadpan}} {{done}} Gotta have y'all numbered lists without any breaks in the middle :D -[[User:NottNott|<span style="color:#e67e22">NottNott</span>]] <small>([[User talk:NottNott|talk]])</small> 16:17, 15 June 2020 (UTC)

::{{re|NottNott}} Is there more than one kind of break? The way it shows in my editor is EXACTLY the same as it appeared before (only, it works now) ¯\_(ツ)_/¯ | [[User:Deadpan|Deadpan]] ([[User talk:Deadpan|talk]]) 23:13, 15 June 2020 (UTC)

Guide talk:Reducing lens complexity

2020-06-15T22:29:23Z

Deadpan: /* Reduction Example */

==Reduction Example==
{{re|Iceghoul}}I modified your example because it didn't look quite right to me. The differentials weren't consistently 1.25 diopters lower than the normalized and that's why I changed it but if you intended what you had then change it back! Maybe we should use a table to organize the layout...perhaps that will help clarify the example? | [[User:Deadpan|Deadpan]] ([[User talk:Deadpan|talk]]) 22:28, 15 June 2020 (UTC)

Guide talk:Reducing lens complexity

2020-06-15T22:28:24Z

Deadpan: /* Reduction Example */

==Reduction Example==

@Iceghoul I modified your example because it didn't look quite right to me. The differentials weren't consistently 1.25 diopters lower than the normalized and that's why I changed it but if you intended what you had then change it back! Maybe we should use a table to organize the layout...perhaps that will help clarify the example? | [[User:Deadpan|Deadpan]] ([[User talk:Deadpan|talk]]) 22:28, 15 June 2020 (UTC)

Guide talk:Reducing lens complexity

2020-06-15T22:28:13Z

Deadpan: Created page with "==Reduction Example== @Iceghoul I modified your example because it didn't look quite right to me. The differentials weren't consistently 1.25 diopters lower than the normaliz..."

==Reduction Example==

@Iceghoul I modified your example because it didn't look quite right to me. The differentials weren't consistently 1.25 diopters lower than the normalized and that's why I changed it but if you intended what you had then change it back! Maybe we should use a table to organize the layout...perhaps that will help clarify the example? [[User:Deadpan|Deadpan]] ([[User talk:Deadpan|talk]]) 22:28, 15 June 2020 (UTC)

Guide:Reducing lens complexity

2020-06-15T22:25:30Z

Deadpan: Left Eye/Right Eye differentials were swapped (I think)

Guide:The Last Diopter

2020-06-15T16:18:02Z

Deadpan: /* Transitioning to no glasses */ Removed some stray text

{{Under_construction}}
[[File:Milhouse-now-girls.gif|right]]
The last diopter: it's a grind.
Hopefully you've already [[Guide:Reducing lens complexity|equalized your lenses]].
{{clear}}
==Transitioning to no glasses==
Begin modulating your walks with some time spent wearing 20/20 crystal clear correction and some time spent with no correction while practicing [[active focus]] and [[Guide:Resolving double vision|double vision resolve]].

As the months pass, spend more of the time without lenses and less of the time with lenses.

==When are glasses no longer needed==

One day, you'll put your glasses back on and not see any improvement in clarity. You're done with normalized lenses. (TODO: cite an EM source for this)

==Final Stretch: Improvement without any lenses==
TODO: talk about how to improve, now that you have no lenses to crutch on.

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

User talk:NottNott

2020-06-15T16:16:15Z

Deadpan: /* Help with formatting Guide:Reducing_lens_complexity */ new section

Focal planes

2020-06-15T16:13:15Z

Deadpan: Redirected page to Focal length

#REDIRECT [[Focal length]]

Guide:Reducing lens complexity

2020-06-15T16:13:03Z

Deadpan:

Guide:Reducing lens complexity

2020-06-15T16:11:31Z

Deadpan: Added the *basics*, needs expansion for sure

Cylindrical

2020-06-15T16:03:23Z

Deadpan: Redirected page to Cylinder

#REDIRECT [[Cylinder]]

Low diopters

2020-06-15T16:01:58Z

Deadpan: Redirected page to Myopia#Low Myopia

#REDIRECT [[Myopia#Low_Myopia]]

Guide:The Last Diopter

2020-06-15T15:58:13Z

Deadpan: Trying to merge the changes ¯\_(ツ)_/¯

{{Under_construction}}
[[File:Milhouse-now-girls.gif|right]]
The last diopter: it's a grind.
Hopefully you've already [[Guide:Reducing lens complexity|equalized your lenses]].
{{clear}}
==Transitioning to no glasses==
Begin modulating your walks with some time spent wearing 20/20 crystal clear correction and some time spent with no correction while practicing [[active focus]] and [[Guide:Resolving double vision|double vision resolve]].

As the months pass, spend more of the time without lenses and less of the time with lenses.==Transitioning to no glasses==

==When are glasses no longer needed==

One day, you'll put your glasses back on and not see any improvement in clarity. You're done with normalized lenses. (TODO: cite an EM source for this)

==Final Stretch: Improvement without any lenses==
TODO: talk about how to improve, now that you have no lenses to crutch on.

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:The Last Diopter

2020-06-15T15:56:58Z

Deadpan:

{{Under_construction}}
[[File:Milhouse-now-girls.gif|right]]
The last diopter: it's a grind.
Hopefully you've already [[Guide:Reducing lens complexity|equalized your lenses]].
{{clear}}
==How to transition to wearing no glasses for distance==
Begin modulating your walks with some time spent wearing 20/20 crystal clear correction and some time spent with no correction while practicing [[active focus]] and [[Guide:Resolving double vision|double vision resolve]].

As the months pass, spend more of the time without lenses and less of the time with lenses.==Transitioning to no glasses==

==When are glasses no longer needed==

One day, you'll put your glasses back on and not see any improvement in clarity. You're done with normalized lenses. (TODO: cite an EM source for this)

==Final Stretch: Improvement without any lenses==
TODO: talk about how to improve, now that you have no lenses to crutch on.

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:Reducing lens complexity

2020-06-15T15:51:31Z

Deadpan: Created page with "{{Under_construction}} TODO: this article needs to be expanded for edge cases like already low diopters. ==When to reduce lens complexity== Lens complexity is best redu..."

Guide:The Last Diopter

2020-06-15T15:31:36Z

Deadpan:

{{Under_construction}}
[[File:Milhouse-now-girls.gif|right]]
(pro topic) It's a grind.
==How to transition to wearing no glasses for distance==

==When are glasses no longer needed==

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

File:Milhouse-now-girls.gif

2020-06-15T15:30:05Z

Deadpan: NOW YOU'LL GET THE GIRLS YOU SEEK

== Summary ==
NOW YOU'LL GET THE GIRLS YOU SEEK
== Licensing ==
{{meme-copyright}}

Guide:The Last Diopter

2020-06-15T05:57:38Z

Deadpan: Created page with "{{Under_construction}} (pro topic) It's a grind. ==How to transition to wearing no glasses for distance== ==When are glasses no longer needed== ==References== {{reflist}}..."

{{Under_construction}}

(pro topic) It's a grind.
==How to transition to wearing no glasses for distance==

==When are glasses no longer needed==

==References==
{{reflist}}

==See also==

[[Guide:Resolving double vision]]

[[Category:Guides]]

Guide:Resolving double vision

2020-06-15T05:48:10Z

Deadpan:

{{Under_construction}}
Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].
==What's happening==

Blur > Double Vision > Clarity

TODO: Add reference to https://endmyopia.org/pro-topic-double-vision-ruining-your-life/

==Fusing the images==

==When is it safe to lower the prescription?==

==References==
{{reflist}}

==See also==

[[Category:Guides]]

Help:How to contribute

2020-06-14T20:37:33Z

Deadpan: /* Writing maths */ Gave a small sample of what's possible with formatting.

{{EM help}}
[[File:Kermit the frog typing.gif|right]]
<center>'''Looking for [[EndMyopia:Policies|wiki policies]]?'''</center>
'''If it ain't broke, don't fix it'''. That is the guiding principle behind this help article ;)

The wiki runs on [https://www.mediawiki.org/wiki/MediaWiki MediaWiki], the same wiki software that powers Wikipedia and probably every other wiki you've come across on the internet. As a result, '''countless other people have written guides far better than we could ever hope to write about how to contribute to the wiki'''. So, no point in reinventing the wheel with this one.

Please try to keep in mind the specifics of how contribution will work here. None of the policies of Wikipedia or any other wiki applies here, we have our own policy articles. We are [[EM:Biased point of view|not written from a neutral point of view]], referencing guidelines are fairly relaxed and humour is encouraged in articles wherever possible for entertainment value to the reader. But as for syntax and the technicalities of editing, you can't get much better than what's already written.

Remember that if you're using templates such as <nowiki>{{templatenamehere}}</nowiki>, a lot of them will not work unless the template has been copied over to here in the Template namespace. Bear that in mind if something doesn't work properly :)

[[Help:Video tutorial|{{resize|150%|You can find an EndMyopia Wiki specific, video tutorial here!}}]]

==Formatting==
===Using Wikitext===
====Wikilinks====
Try to use wikilinks when writing articles. You can write wikilinks like this:

<code><nowiki>[[Article]]</nowiki></code>

That will produce [[Article]]. You can also produce red links, that look [[MediaWiki:like this|like this]] - this is good for indicating to other editors that an article on this topic needs to be written, and doesn't exist yet.

====Wikitext guides====
You can find all the information you've ever wanted on how to use Wikitext to write articles effectively at Wikipedia.

[https://en.wikipedia.org/wiki/Help:Wikitext Wikipedia help article on how to format articles using Wikitext (very recommended)]

====Styling of articles====
You can find a far, far better crafted Manual of Style at Wikipedia than we could ever have the time or enthusiasm to write. [https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style Here it is, in all of its glory].

Definitely feel free to ignore anything that is more related to being an encyclopedia, we are not an encyclopedia, we are a vision improvement resource, first and foremost, full of funny jokes. You will find a lot of information about how to stylise articles in a cool way there though.
====Writing maths====
To write maths, enclose text in <code><nowiki><math></math></nowiki></code> tags.

<code><nowiki><math>(5+12)/(41.9999)</math></nowiki></code> displays as

<math>(5+12)/41.9999</math>

You can use fancy formatting too!

<code><nowiki><math>\frac{1}{2}e^{i\pi} = \frac{-1}{2}</math></nowiki></code> displays as

<math>\frac{1}{2}e^{i\pi} = \frac{-1}{2}</math>

For way too much detail on how to write and display formulae, see [https://en.wikipedia.org/wiki/Help:Displaying_a_formula Wikipedia's guide on how to render mathematical formulae].

====Citing papers====
We want to cite scientific research where possible to justify this approach. One way is to use the ''''proveit'''' gadget that should appear in the bottom right corner while editing - see the video tutorials mentioned above for more details.

=====Biomedical citation maker=====
Another (external) tool is http://sumsearch.org/cite/ - if you have a unique reference for the journal in one of various formats (such as a <nowiki>https://doi.org/...</nowiki> url), you can enter that into the box and will generate a fancy '''<nowiki><ref>{{cite...}}</ref></nowiki>''' sequence with title, authors, journal, etc. that you can simply paste in.

It provides a bookmarklet which allows you to generate a citation by simply selecting the doi using mouse, and pressing a button.

====EndMyopia specifics====
There is an apparent consensus at the time of writing that 'EndMyopia' should be the consistent capitalisation of how the name is referenced. Please refrain from using different capitalisations when referring to EndMyopia in articles. Consistency is important.

==Creating new pages==
===Creating a new article===
To create a new article, enter in the URL of the article you would like to create. You'll be taken to a page where you will be asked to create the article if it doesn't exist already.

Alternatively, create a redlink, [[MediaWiki:like this|like this]]. Then click on the redlink to create the article. You can place loads of redlinks in articles that are already written to indicate to others the articles that need writing.
===Creating a redirect===
Redirects move anyone who lands at that page to another page. This is used for terms that are similar, like [[Myopia]] and [[Shortsightedness]]. This is really important in preventing duplicate articles covering the same topic, and to aid in navigation of the wiki.

To create a redirect, type the following in the entire body of an article, and nothing else:

<code><nowiki>#redirect [[ArticleName]]</nowiki></code>

==Using talk pages==
Talk pages are 100% completely identical to normal pages in how they work. You can use all wikitext markup tricks in talk pages, the software does not handle them differently. The following are the basics:

Create subject headers using <code><nowiki>==Subject==</nowiki></code>. Indent your messages in responding to other editors using colons. Sign off your posts with your signature of <nowiki>~~~~</nowiki> as standard. Be sure to notify users using the template <code><nowiki>{{re|User}}</nowiki></code>. For example, a fictional conversation between two editors you might find on the Differentials talk page:

<code><nowiki>==Difference between diffs and normalised==</nowiki><br>
<nowiki>Hey guys, what should be the advice given about differentials? ~~~~</nowiki><br>
<nowiki>:{{re|User}} Differentials should be 1-2 diopters below your normalised prescription. We should put this in the lead section of the article. ~~~~</nowiki><br>
<nowiki>::{{re|OtherUser}} Oh great, many thanks! ~~~~</nowiki></code>

'''Will be rendered as (with the heading removed):'''

Hey guys, what should be the advice given about differentials? [[User:User|User]] ([[User talk:User|talk]]) 13:58, 20 May 2020 (UTC)
:{{re|User}} Differentials should be 1-2 diopters below your normalised prescription. We should put this in the lead section of the article. [[User:Other User|OtherUser]] ([[User talk:OtherUser|talk]]) 14:08, 20 May 2020 (UTC)
::{{re|OtherUser}} Oh great, many thanks! [[User:User|User]] ([[User talk:User|talk]]) 14:11, 20 May 2020 (UTC)

You can also press the 'Add topic' button so you don't have to type <code><nowiki>==Topic title==</nowiki></code> before your messages.

As you can see, using talk pages is ridiculously easy. Just remember though: [https://en.wikipedia.org/wiki/Help:Talk_pages anything you can do, Wikipedia can do better Click here for Wikipedia's explanation about talk pages.].
===Signatures===
Signatures can be configured using the Preferences button in the top right. It's better to keep this as simple as possible, and there's literally nothing wrong with the default signature. Definitely check out [https://en.wikipedia.org/wiki/Wikipedia:Signatures Wikipedia's page on how to customise signatures] if you want to leave your mark a bit more on every talk page you visit. Who doesn't like a colourful talk page?

Again, none of WPs policies apply to signatures, except please do not include images or files in your signatures as they cause unnecessary server load and make talk pages look horrible.

Posts can be signed off with four tildes or three. Four is by definitely what most people should use in most circumstances. Here's the difference:

<nowiki>~~~~</nowiki>
:[[User:User|User]] ([[User talk:User|talk]]) 14:08, 20 May 2020 (UTC)

<nowiki>~~~</nowiki>
:[[User:User|User]] ([[User talk:User|talk]])

Forgetting to use signatures will leave everyone confused really quickly, so please make it a habit to include <nowiki>~~~~</nowiki> at the end of all your messages on talk pages! :)

===Notifying other users===
When you reply to a user on any other talk page aside from their own talk page, they won't be notified unless you remember to send a notification template to them. This is super easy to do!!

When responding to people, type the following at the beginning of your message:

<code><nowiki>{{re|User}}</nowiki></code>

{{re|User}} is how it is displayed. This will send a notification to the user through the notification system.

You can also use <code><nowiki>{{u|User}}</nowiki></code>

{{u|User}} is how this one looks, and can be used to mention someone's username without the @ symbol.

{{Editing navbox}}
===Adding symbol messages===
{{main|EM:Symbol messages}}
You can add loads of funny symbol messages to what you say. Here are some examples.

{{done}}

{{WPcrystalball}}

{{Bulb}}{{Bulb2}}

{{Idea}}

{{NewProposal}}

{{Thank}}

See more at [[EM:Symbol messages]].

Resolving double vision

2020-06-14T04:30:53Z

Deadpan: Redirected page to Guide:Resolving double vision

#REDIRECT [[Guide:Resolving double vision]]

How to find Active Focus

2020-06-14T04:30:31Z

Deadpan: Redirected page to Guide:How to find Active Focus

#REDIRECT [[Guide:How to find Active Focus]]

Lower diopters

2020-06-14T04:23:24Z

Deadpan: Redirected page to Near-sightedness

#REDIRECT [[Near-sightedness]]

Guide:Resolving double vision

2020-06-14T04:22:54Z

Deadpan:

{{Under_construction}}

Help! I'm seeing double! Actually, [[double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[lower diopters]].

Ghosting

2020-06-14T04:19:55Z

Deadpan: Redirected page to Double vision

#REDIRECT [[Double vision]]

Misaligned Vision

2020-06-14T04:19:04Z

Deadpan: Redirected page to Double vision

#REDIRECT [[Double vision]]

Misaligned vision

2020-06-14T04:19:00Z

Deadpan: Redirected page to Double vision

#REDIRECT [[Double vision]]

Double Vision

2020-06-14T04:18:53Z

Deadpan: Redirected page to Double vision

#REDIRECT [[Double vision]]

Guide:Resolving misaligned vision

2020-06-14T04:18:36Z

Deadpan: Redirected page to Guide:Resolving double vision

#REDIRECT [[Guide:Resolving double vision]]

Guide:Resolving double vision

2020-06-14T04:17:30Z

Deadpan:

{{Under_construction}}

Help! I'm seeing double! Actually, [[Double vision]] is a good sign your vision is improving and is a normal step between blur and clarity, especially at [[low myopia|lower diopters]].

Guide:Resolving double vision

2020-06-14T04:16:20Z

Deadpan: Created the guide

{{Under_construction}}

Help! I'm seeing double! Actually, [[Double vision]] is a good sign your vision is improving and is a natural step between blur and clarity.

Double vision

2020-06-14T04:13:15Z

Deadpan:

'''Double Vision''', misaligned vision, or ghosting, is when your visual cortex perceives two images when there should be one.

This phenomenon usually occurs as an intermediate step in your vision improvement and is to be differentiated from [[Astigmatism]] ("Directional Blur"). Your vision biology is constantly adjusting to environmental stimulus, whereby different parts of your system respond at different rates. After clearing up [[Ciliary Spasm]] and after starting to improve the physical shape of your eyeball, your [[visual cortex]] already receives plenty of clear data. Our brains however were not built to handle artificial changes to the natural [[Focal Plane]]. This means that even when the image hitting your [[Retina]] is clear after reducing the strength of your glasses, your brain has to relearn how to create a single clear image out of this new data. This can take longer than resolving the refractive state of your eyeballs and manifests in multiple overlapping clear images of the same image.
This might be somewhat common as you start improving your eyesight - more ghosted images will begin to appear as your [[visual cortex]] is constantly learning to readjust to new signals.

Double Vision can be more pronounced once you are in the [[Low Myopia]] range, since every small change in your diopter strength then results in a larger shift of your [[Focal Plane]].

For help resolving double vision see the [[Guide:Resolving double vision]].
==References==
{{reflist}}

[[Category:Articles]]

Vertex distance

2020-06-14T03:53:03Z

Deadpan: /* Calculation */ Minor correction.

The '''vertex distance''' is the distance between the surface of your eye and the center back of your lens. As the lens moves further from the eye, the perceived strength of your lenses is altered. This is particularly important to know about when switching between contacts and eyeglasses, and for very high myopes.

==Practical Guidelines==

* <div> '''I have ''High Myopia''. How does Vertex Distance affect me?'''</div>
::If you wore contact lenses before EndMyopia (EM) and continue to use contact lenses throughout your EM journey - Then vertex distance doesn't affect you.

::If you wore glasses before EM and continue to wear glasses during EM then it is recommended to invest in a [[lens kit]] and choose your reduced lenses based on testing your [[visual acuity]] - Then vertex distance doesn't affect you. If you do not have access to a lens kit and you want to reduce in pre-defined diopter steps - Then vertex distance can affect you: For example, reducing from -14.0 dpt to -13.75 dpt at a vertex distance of 15mm results in an effective perceived diopter drop of only 0.17 dpt, further reducing to -13.5 dpt would result in an effective diopter drop of 0.34 dpt.

::If you switch from glasses to contact lenses at high myopia or vice-versa you definitely will need to account for vertex distance before buying new corrections.

* <div> '''I wear contact lenses as [[normalized]] and put [[plus lenses]] over them as my [[differentials]]. Do I need to worry about vertex distance?'''</div>
:No. Your differential correction will not undercorrect you by a diopter margin where vertex distance plays a role.

* <div> '''How do I measure my vertex distance?''' </div>
:Ask a second person to measure the distance from your closed eye to your glasses while you wear them. Or, as a literal "rule of thumb", try placing different fingers between your closed eye and the back of your glasses, then measure the thickness of your finger - This is an estimate for your vertex distance.

* <div> '''I use the endmyopia.org Diopter Calculator App and my results differ from my manual centimeter [[measurement]]s, why?''' </div>

:The [https://play.google.com/store/apps/details?id=org.endmyopia.calc Diopter Calculator App for Android] (as for the June 2020) measures the distance from the screen to the tip of your nose. Since the distance from the nose to your eyeball is not taken into account, your focal length seems smaller (and your diopters higher) than with a manual measurement. You can however correct these values by applying the same formula as for the vertex distance, inserting the distance from the tip of your nose to your eyeball for <math>x</math>.

==Calculation==
{{Notice|Advanced, this information may not apply. See above.}}
The effect of vertex distance on the perceived diopter strength of your glasses can be expressed by:

<math>D_C=\frac{1}{\frac{1}{D}-x}</math>,

where <math>D_C</math> is the corrected (perceived) diopter number, <math>D</math> is the diopter strength of your lenses and <math>x</math> is the vertex distance in meters. It is important to note here that this equation is sensitive to minus signs of your diopter strength.

Example for a vertex distance of 15mm (=0.015m):

<math>+4.0 dpt: D_C=\frac{1}{\frac{1}{+4.0}-0.015}=+4.255 dpt</math>

<math>-4.0 dpt: D_C=\frac{1}{\frac{1}{-4.0}-0.015}=-3.774 dpt</math>

In the above example the -4.0 dpt glasses yield the same level of correction as -3.75 dpt contact lenses. It can be seen that vertex distance '''increases''' the strength of [[plus Lenses]] and '''decreases''' the strength of [[minus lenses]]. The effect is noticeable above 4.0 dpt and is mostly negligible for [[low myopia]].

The expression looks less intimidating when you remember that (by definition) the [[diopter]] is the reciprocal of the focal length. So it's really just:

<math>f_C = f - x</math>
where <math>f_C = \frac{1}{D_C}</math> and <math>f = \frac{1}{D}</math>

Conceptually, the focus length is reduced (power is increased) because it has moved closer to the source of the image.

==References==
{{reflist}}

[[Category:Articles]]