Detached retina is a condition that can lead to blindness if it is not diagnosed and treated very quickly. Once the retina has become detached, it needs to be surgically repaired to restore or arrest loss of vision. If the detachment is partial a special type of laser treatment called photocoagulation can be used. This treatment creates a scar around the edge of the retinal hole, fusing the retina to its underlying layer and preventing the entry of damaging fluids.