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Hypertrophic retinal pigment epithelium (first type)

The first type represented here is the typical unifocal CHRPE. It is a gray to black, well defined, minimally elevated fundus lesion in the RPE having a diameter in the range of 2 to 6 mm. (The average optic nerve is 1.5 mm in diameter.) Because the receptor cells overlying these lesions are absent, there is an absolute scotoma associated with them. (Contributed by Dr. James Walters.)