A laser is used to treat diseases of the retina, which is the thin nerve layer in the back of the eye we see with. It treats a disease called proliferative retinopathy which can be caused by diabetes or sickle cell disease. What happens in these conditions is that the small blood vessels supplying the retina with oxygen become narrow and the retina does not get enough oxygen. Because of this it grows new abnormal blood vessels which can break and bleed and eventually blind the eye. The laser treatment which is called PANRETINAL LASER PHOTOCOAGULATION indirectly closes off these abnormal blood vessels, and the bleeding is prevented. The laser is usually given to both eyes, and sometimes it has to be repeated over the months or