Talk:Presbyopia
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[edit] Certain Professions
The article states that presbyopia is delayed in certain professions. Which ones ?? --SystemBuilder 18:58, 8 March 2007 (UTC).
Ok, I found the article (the reference seemed to be associated only with the 2nd fact in the sentence.) I also found that the article assumed that 'seeking correction for presbyopia' was the same as 'developing presbyopia' which by no means is the same, e.g. farmers and housewives most likely seek correction later because their daily chores do not require extensive reading or near-field focusing to complete successfully. On the other hand, office-workers require this skill, and the lives of construction workers might depend upon it. --SystemBuilder 19:33, 8 March 2007 (UTC)
[edit] Comment
It is mentioned that there is a "surgery" or "treatment" for correcting presbyopia. What is it? How does it work? Is it permanent?—The preceding unsigned comment was added by 4.176.54.38 (talk • contribs) 17:15, 27 January 2005 (UTC).
- A Google search for Presbyopia reveals several pages offering surgery or laser treatment, though I regard these with suspicion as they are trying to sell. It also reveals a patent covering the matter, and a report of recent trials of laser treatment. Non of these are as good as an article I found on the web a few years ago, for a centre offering treatment which explained how staples were put in to tension the zonula, the elastic ligaments that pull the lens outwards. The laser methods seek to strengthen or shorten the zonula, and some methods seem to insert a ring that pulls out the zonula. This all looks very recent and experimental and personally I wouldn't want to risk it, but it's interesting and may well become routine one day. --Lindosland 02:06, 7 February 2006 (UTC)
[edit] Article Improvement Drive
Contact lens is currently nominated to be improved on Wikipedia:Article Improvement Drive. Please support the article with your vote. --Fenice 10:51, 16 January 2006 (UTC)
[edit] Exercises
With the excellent quackwatch reference in Optometrist in mind, I ask: Has there been any research to determine whether eye exercises delay/prevent/treat Presbyopia? It seems like a simple thing to test, so surely, it's been done. What are the results? Since muscles are used to focus, it's reasonable to hypothesize keeping those muscles strong (e.g. by repeatedly focusing near and far) would help. If not, what are you waiting for? Surely, there's, e.g. NIH money for this type of work!—The preceding unsigned comment was added by Elvey (talk • contribs) 16:47, 6 September 2006 (UTC).
[edit] etymology of word
why give presbyteros (elder) when the simple form of the adjective presbys or presbus, old, seems simpler?12:47, 10 July 2007 (UTC)
[edit] Theories about focusing mechanisms of the eye
This article offers two opposing theories to explain the focusing mechanism which appear to contradict one another:
1. That the tension of the zonula is released by contraction of the ciliary muscle, to allow the lens to fatten, for close vision.
2. That the 'ciliary muscles' pull the lens taut in order to focus at close range, having the counterintuitive effect of steepening the lens centrally (increasing its power) and flattening it peripherally.
Since there appears to be no consensus in the literature, why not consider a third alternative?
3. That the muscles that control rotational eye movement, lateral rectus, medial rectus, and oblique muscles, work in opposition to one another in a kind of isometric tension that changes the shape of the eye, e.g. shortening (and lengthening) the focal distance to the retina?
75.85.223.238 (talk) 01:16, 5 December 2007 (UTC) Wm. B. Fankboner
[edit] Treatment
The mentioning of TruFocals in the Treatment section, looks very much as promotion of a specific product, Should this be part of the the article? jengeldk (talk) 13:02, 14 April 2008 (UTC)
