The retina is a highly specialized nervous tissue able to perceive the light reflected by objects and people and to transform light stimulations into nervous impulses, which, arriving to the visual cortex of the brain through the optic nerve and the optic chiasm, are processed and “translated” into images.
The retina lines the ocular fundus and covers most of the internal part of the eye. In the presence of certain pathological conditions, the retinal tissue separates in whole or in part from the ocular fundus and loses contact with the underlying layer, the retinal pigment epithelium and, consequently, also with the choroid, the structure that provides oxygen and nutrients to the photoreceptors. When this occurs, the cells of the retina are no longer able to function correctly and the consequence is a significant visual deficit. If one does not intervene adequately and timely, the retinal cells are going to dies and the visual deficit is transformed into a permanent loss of vision.