Geographic Atrophy
Geographic atrophy is the advanced stage of "dry" age-related macular degeneration.  "Geographic" describes the irregular-shaped areas where loss of pigment has occurred.   Atrophy refers to the wasting away of the cells, in this case, in the retinal pigment epithelium (RPE) layer.

This condition has a tendency to progress slowly, and is more common in caucasians, cigarette smokers, and in individuals with a light-colored iris.

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