Optic part of retina

The optic part of the retina is the light-sensitive inner surface of the eyeball. It covers more than half of the inner ocular surface, the entire area posterior to the ora serrata. Thanks to photoreceptor cells, it can transform light into a nervous message, which it sends to the brain via the optic nerve.

It is made up of a pigmentary layer and a neural layer, which are only attached to each other at the level of the disc of optic nerve and the ora serrata. It's the pressure of the vitreous body that holds them together. This is why a decrease in intraocular pressure can cause retinal detachment.