Astigmatism
From DrKoop's partner site on alzheimer's disease, OurAlzheimers.com
Astigmatism is a condition in which the cornea (the clear covering of the front of the eye) has an abnormal curve, causing out-of-focus vision. Causes, incidence, and risk factors The cause of astigmatism is unknown. It is usually present from birth, and often occurs together with nearsightedness or farsightedness. A minor degree of astigmatism is considered normal and does not require correction. Astigmatism is very common.
Review Date: 08/08/2006  advertisement
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