Cataract in Adults
What Is A Cataract?
A cataract is a cloudy area in the lens of the eye.
A normal lens is clear. It lets light pass to the back of the eye. A cataract blocks some of the light. As a cataract develops, it becomes harder for a person to see.
Cataract is a normal part of aging. About half of Americans ages 65 to 74 have cataract. About 70 percent of those age 75 and over have this condition.
Most people with cataract have a cataract in both eyes. However, one eye may be worse than the other because each cataract develops at a different rate.
Some people with cataract don't even know it. Their cataract may be small, or the changes in their vision may not bother them very much. Other people who have cataract cannot see well enough to do the things they need or want to do.
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Sources:
National Institutes of Health
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