The retina is a thin layer of tissue lining the back of the eye. It is located close to the optic nerve. The function of the retina receives light focused by the lens, to convert light into nerve signals and send signals to the brain. Method of retinal light by a layer of photoreceptor cells. This is essentially a sensitive cells to light whose function is to detect the quality of the color and light intensity.Retina information of visual cells and sends this information to the brain via the collected process of the optic nerve.
Basically, the process of the retina the image of the focused light, and the brain is free to decide what image. Because of the important role of the retina in vision, retinal damage can lead to permanent blindness. Conditions such as retinal detachment, where the normal retina moves from the normal position, the prevention can not accept or process the light of the retina, and thus prevent the brain receiving the information, leading to blindness.