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JAMA Patient Page
July 9, 2003

Cataracts

JAMA. 2003;290(2):286. doi:10.1001/jama.290.2.286

As part of our visual (sight) system, each eye contains a lens. The lens is a clear, disc-shaped structure behind the pupil and iris. The lens focuses light beams on the retina, the back part of the eye that sends sight signals to the brain. When the lens becomes cloudy, vision blurs. Clouding of the lens is called a cataract.

Cataracts are common, especially in older individuals. As a normal part of the aging process, the lens gradually becomes cloudy. A simple eye examination by an ophthalmologist (eye physician) can detect a cataract.

The July 9, 2003, issue of JAMA includes an article about cataracts.

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