In several conditions such as diabetic retinopathy and vein occlusions, portions of the retina lose circulation. These damaged parts of the retina begin to produce signals that grow abnormal blood vessels which cause scarring and bleeding in the eye. This can lead to blindess if not treated. The condition can be helped by destroying the damaged retina using laser treatment. This prevents the growth of abnormal blood vessels and can be vision-saving. This procedure can be done sitting up or lying down, and is performed in the office. It typically takes about 15-20 minutes.