The non-photosensitive portion includes the epithelium covering the ciliary body and the posterior pigment layer of the Iris. The epithelium that covers the ciliary body produces the aqueous humor, and the pigment layer of the iris contributes to the color of the iris. The retina consists of 10 histolotically distinct layers Layer 1. Pigment epithelium , derived from the outer sheet of the optic vesicle. Process vitamin A used by photoreceptor to produce visual pigments.
Out segment is the cell part sensitive to light.
It is composed of hundreds of parallel membranous lamellae. The membranes contain the visual pigment, rhodopsin. Also, the nuclei of Muller cells are located in this layer. The lens capsule is the thick basal lamina. It provides nutrients to the lens and maintains the shape of the eye.