Difference between revisions of User:Divenal
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==Active talk page discussions== | ==Active talk page discussions== | ||
<categorytree mode="pages" hideroot="on" hideprefix="always">Active talk page discussions</categorytree> | <categorytree mode="pages" hideroot="on" hideprefix="always">Active talk page discussions</categorytree> | ||
==Interesting videos== | |||
https://www.youtube.com/watch?v=1yIpyitm6eE | |||
shows details of zonnules during accommodation and de-accommodation. | |||
== review paper on the growth mechanism == | == review paper on the growth mechanism == | ||
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Also (don't have a doi for this one): https://iovs.arvojournals.org/article.aspx?articleid=2123153 | Also (don't have a doi for this one): https://iovs.arvojournals.org/article.aspx?articleid=2123153 | ||
* The first 4 references are for other studies which link near work and accommodation to myopia | * The first 4 references are for other studies which link near work and accommodation to myopia | ||
https://iovs.arvojournals.org/article.aspx?articleid=2161845 | |||
Exaggerated longitudinal eye growth is assumed to play an important role in the development of myopia. A significant correlation between refraction and amount of near-work has been reported. | |||
(Off-topic but confirmation biasy...) | |||
A really really old paper (1932) | |||
https://www.sciencedirect.com/science/article/pii/S0002939432902827 | |||
Based on the hypothesis that progression of myopia may result from tension of the extraocular muscles during prolonged convergence in near work ... | |||
https://bjo.bmj.com/content/89/9/1196.full | |||
... The human eye elongates slightly during accommodation,... suggesting that prolonged accommodation might lead to a permanent increase in eye length and myopia. On this basis, reducing accommodative effort might act to reduce myopia progression. | |||
== But maybe it's convergence, not accommodation == | == But maybe it's convergence, not accommodation == | ||
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https://europepmc.org/article/med/1852394 which disses the idea | https://europepmc.org/article/med/1852394 which disses the idea | ||
==astigmatism== | |||
A review : {{cite journal| author=Read SA, Collins MJ, Carney LG| title=A review of astigmatism and its possible genesis. | journal=Clin Exp Optom | year= 2007 | volume= 90 | issue= 1 | pages= 5-19 | pmid=17177660 | doi=10.1111/j.1444-0938.2007.00112.x | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17177660 }} | |||
Evidence that the internal optics compensate for corneal errors ? (ref 15 of the review) https://pubmed.ncbi.nlm.nih.gov/15134473/ | |||
pubmed offered this as a similar study: https://pubmed.ncbi.nlm.nih.gov/18054373/ | |||
It is well known that the aberrations of the cornea are partially compensated by the aberrations of the internal optics of the eye (primarily the crystalline lens) in young subjects. This effect has been found not only for the spherical aberration, but also for horizontal coma... | |||
{{cite journal| author=Artal P, Benito A, Tabernero J| title=The human eye is an example of robust optical design. | journal=J Vis | year= 2006 | volume= 6 | issue= 1 | pages= 1-7 | pmid=16489854 | doi=10.1167/6.1.1 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16489854 }} | |||
... indicating that the internal ocular optics (mainly the crystalline lens) play a significant role in compensating for the corneal aberrations, thereby producing an improved retinal image. In this paper, we show that this compensation is larger in the less optically centered eyes that mostly correspond to hyperopic eyes. This suggests a type of mechanism in the eye's design that is the most likely responsible for this compensation. Spherical aberration of the cornea is partially compensated by that of the lens in most eyes... | |||