The RPE is a monolayer of hexagonally shaped cells. Each RPE cell contains numerous melanin granules that help in absorbing stray light, thereby minimizing light scatter within the eye. The apical side of these cells faces the photoreceptors and has microvilli that interdigitate with the outer segments of rods and cones. The basal side is adjacent to the Bruch's membrane, a multi-layered structure that separates the RPE from the choroid.
