The retina lines the back wall of the eye, and is responsible for absorbing the light that enters the eye and converting it into an electrical signal that is sent to the brain via the optic nerve, allowing you to see. Many conditions can lead to a retinal detachment , in which the retina separates from the back wall of the eye, like wallpaper peeling off a wall. Retinal detachment separates the retinal cells from the layer of blood vessels that provides oxygen and nourishment to the eye. The longer retinal detachment goes without treatment, the greater the risk of permanent vision loss in the affected eye. Retinal detachment is a serious eye condition that can lead to vision loss if not treated promptly. Learn about the warning signs, risk factors, and surgical options for this ophthalmology emergency. Retinal detachment , when the retina separates from the back of the eye, is considered a medical emergency, and can cause loss of vision.