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Some eye diseases are rare. A rare disease is generally considered to have a prevalence of fewer than 200,000 affected individuals in the United States.

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This page was last modified in July 2010

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NEI Website Header Description: Confocal image of rat RPE layer two weeks after laser. A well-defined neovascular membrane labeled with Isolectin Ib4 (red) is detected below proliferating RPE cells (Phalloidin in green). New vessels are growing toward the subretinal space.