Cataract
From DrKoop's partner site on alzheimer's disease, OurAlzheimers.com
A cataract is a cloudy or opaque area in the lens of the eye. Cataracts usually develop as a person gets older and may run in families. Other environmental factors such as smoking or exposure to toxic substances can also accelerate the development of a cataract. Cataracts can cause visual problems such as difficulty seeing at night, seeing halos around lights, and sensitivity to glare.
Review Date: 09/01/2006  advertisement
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