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Definition of Retinal pigment epithelium

Retinal pigment epithelium: The pigment cell layer that nourishes the retinal cells.

The retinal pigment epithelium is located just outside the retina and is attached to what is called the choroid, a layer filled with blood vessels that nourish the retina.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012

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