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Green or Red
I recently went to have my eyes checked and was told that I have astigmatism, albeit "just a little." He came to his conclusion based on a series of tests with white superimposed on green and red backgrounds. I observed the letters through a phoropter. I was asked which letters appeared clearer: the ones superimposed on the green or red background? This does not appear to be a reasonable test for astigmatism. If I am not mistaken, shouldn't an astigmatism chart be used if one was to diagnose astigmatism? Anyone have any ideas? mezzaninelounge 14:19, 20 July 2006 (UTC)
- Doesn't it have more to do with the eye doc looking inside your eye? JayKeaton 08:53, 1 November 2006 (UTC)
The government page on astigmatism http://www.nlm.nih.gov/medlineplus/ency/article/001015.htm states that "Glasses or hard contact lenses will correct astigmatism. Soft contact lenses do not work as well." I have a 180 degree axis in one eye and a 170 degree axis in the other eye and am able to use softmed torics which are soft lenses. The doctor told me that those would be better than buying hard lenses. I have no problems wearing them or seeing with them and my astigmatism is horrible. I'm wondering too if there is any genetic basis for having astigmatism. My mother also has a huge axis on both eyes. --Starladustangel 05:06, 21 November 2006 (UTC)
- This is not true. I have astigmatism and I'm using soft lenses to correct it. 195.72.132.1 09:37, 23 February 2007 (UTC)
cataract operation,implant of lense, can this lead to cjd
this is bhatia here, my uncle who is in varanasi INDIA, was opearated for cataract 6 months back,has suddenly being diagonised having cjd, is this possible.can you guide us in this. —The preceding unsigned comment was added by 59.182.35.9 (talk) 15:56, 29 April 2007 (UTC).
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- By "cjd" do you mean Creutzfeldt-Jakob disease? Because that has nothing to do with cataracts, eyes, or astigmatism. Furthermore, Wikipedia is not WebMD, and the discussion page does not exist for you to ask questions about the validity of medical diagnoses. --75.58.54.17 21:12, 28 October 2007 (UTC)
Misleading
The cornea, instead of being shaped like a sphere, is ellipsoidal (like an egg)
Spheres are ellipsoids. This statement does not meaningfully draw a distinction between a healthy cornea and an astigmatic cornea. What actually differentiates spheres and eggs is that eggs are mostly prolate and spheres are neither prolate nor oblate. It is also wrong to say that "ellipsoidal" means "like an egg". An egg is a very special case of an ellipsoid, just as a sphere is.
Quite simply, an astigmatic cornea resembles a prolate hemispheroid whereas a healthy cornea resembles a spherical hemispheroid. An egg would actually be both of those two joined together. --75.58.54.17 21:26, 28 October 2007 (UTC)
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