Retinal detachment repair is eye surgery to place a retina back into its normal position. The retina is the light-sensitive tissue in the back of the eye. Detachment means that it has pulled away from the layers of tissue around it. Most retinal detachment repair operations are urgent. A detached retina does not get a supply of oxygen. This causes the cells in the area to die, which can lead to blindness. If holes or tears in the retina are found before the retina detaches, the eye doctor can close the holes using a laser.