Answer
The optic cup forms both the neural and the pigmented layers of the retina.
Work Step by Step
About 22 days after fertilization, the optic grooves form the ectoderm of the prosencephalon. A few days later the opic grooves enlarge and give rise to the optic vesicles. Subsequently, the distal portion of the optic vesicles form the optic cups--which remain attached by a stalk to the prosencephalon. The inner wall of the optic cups gives rise to the neural layer of the retina; the retinal pigmented layer derives from the outer layer of the optic cup.
