Night vision key to predicting age-related macular degeneration

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How well older people see in dim light is the strongest predictor of future blindness, according to a study by Greater Baltimore Medical Center?s Dr. Janet Sunness.

Unlike the better known “wet” macular degeneration ? caused by excess blood vessels in the retina ? patients with dry degeneration lose the light-receptive cells on the retina, causing spots in their vision that grow together over time.

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