macular degeneration

Definition / meaning of macular degeneration

A condition in which there is a slow breakdown of cells in the center of the retina (the light-sensitive layers of nerve tissue at the back of the eye). This blocks vision in the center of the eye and can cause problems with activities such as reading and driving. Macular degeneration is most often seen in people who are over the age of 50. Also called age-related macular degeneration, AMD, and ARMD.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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