Difference between revisions of Axial length

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'''Axial length''' of the eyeball is the distance from the lens to the retina. ~~Elongation~~ is the scientifically accurate reason why ~~anyone has~~ [[myopia]].

'''Axial length''' of the eyeball is the distance from the lens to the retina. Axial elongation is the scientifically accurate reason why most myopes have [[myopia]], as other causes are rare.

==Biology==

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:''Main article: [[Axial elongation]]''

[[Hyperopic defocus]], excessive [[myopic defocus]], ~~and~~ form deprivation can cause [[axial elongation]].

[[Hyperopic defocus]], excessive [[myopic defocus]], form deprivation, and [[accommodation]] strain can all cause [[axial elongation]]. In particular, using distances glasses for close-up is a very common cause of it.

==Controversy==

Hyperopes tend not to report back with any progress toward 20/20 vision. An implication is that EndMyopia techniques may not work for far-sighted people. This may indicate that we aren't changing axial length with EndMyopia techniques. Another theory is that EndMyopia might work by flattening the lens. It's easier to flatten a lens than to squeeze it, so this would explain why EndMyopia doesn't seem to attract people with hyperopic vision. Probably related, see also [[Dr. Carr]].

==Further Reading==

* https://pubmed.ncbi.nlm.nih.gov/19204786/

* http://www.molvis.org/molvis/v15/a31/mv-v15-a31-yang.pdf

* https://endmyopia.org/wp-content/uploads/2017/02/Reduction_in_Axial_Length_with_Age__An.3.pdf

* https://iovs.arvojournals.org/article.aspx?articleid=2126435

==References==

@@ Line 1: / Line 1: @@
-'''Axial length''' of the eyeball is the distance from the lens to the retina. Elongation is the scientifically accurate reason why anyone has [[myopia]].
+'''Axial length''' of the eyeball is the distance from the lens to the retina. Axial elongation is the scientifically accurate reason why most myopes have [[myopia]], as other causes are rare.
 ==Biology==
@@ Line 11: / Line 11: @@
 :''Main article: [[Axial elongation]]''
-[[Hyperopic defocus]], excessive [[myopic defocus]], and form deprivation can cause [[axial elongation]].
+[[Hyperopic defocus]], excessive [[myopic defocus]], form deprivation, and [[accommodation]] strain can all cause [[axial elongation]]. In particular, using distances glasses for close-up is a very common cause of it.
+==Controversy==
+Hyperopes tend not to report back with any progress toward 20/20 vision.  An implication is that EndMyopia techniques may not work for far-sighted people.  This may indicate that we aren't changing axial length with EndMyopia techniques.  Another theory is that EndMyopia might work by flattening the lens.  It's easier to flatten a lens than to squeeze it, so this would explain why EndMyopia doesn't seem to attract people with hyperopic vision.  Probably related, see also [[Dr. Carr]].
+==Further Reading==
+* https://pubmed.ncbi.nlm.nih.gov/19204786/
+* http://www.molvis.org/molvis/v15/a31/mv-v15-a31-yang.pdf
+* https://endmyopia.org/wp-content/uploads/2017/02/Reduction_in_Axial_Length_with_Age__An.3.pdf
+* https://iovs.arvojournals.org/article.aspx?articleid=2126435
 ==References==