Retinal detachment is a serious eye condition where the retina, the light-sensitive layer at the back of the eye, separates from the underlying layer of tissue that supports it. The retina is essential for vision because it converts light rays into electrical signals that are sent to the brain. When the retina detaches, it loses its blood supply and can no longer function properly. This can lead to permanent vision loss if not treated promptly. Retinal detachment is a medical emergency and requires prompt treatment to preserve vision. The type of treatment will depend on the severity of the detachment and the cause.