LASER PHOTOCOAGULATION - eye
Laser photocoagulation is eye surgery using a laser to shrink or destroy abnormal structures in the retina, or to intentionally cause scarring.
Your doctor will perform this surgery at an outpatient or office setting.
Photocoagulation takes place by using the laser to create a microscopic burn in the target tissue.
The laser spots are usually applied in 1 of 3 patterns.
Before the procedure, you will be given eye drops to dilate your pupils. Rarely, you will get a shot of a local anesthetic. The shot may be uncomfortable.
You will be awake and pain-free during the procedure.
• You will be seated with your chin in a chin rest. A special lens will be placed on your eye. The lens contains mirrors that help the doctor aim the laser. You will be instructed to look straight ahead or at a target light with your other eye.
• The doctor will aim the laser at the area of the retina needing treatment. With each pulse of the laser, you will see a flash of light.
Depending on the condition being treated, there may be only a few pulses, or as many as 500.
Diabetes can harm the eyes by causing diabetic retinopathy. It is one of the most common eye diseases that needs laser photocoagulation. It can damage the retina, the back part of your eye. The most severe from of the condition is proliferative diabetic retinopathy, in which abnormal vessels grow on the retina. Over time, these vessels can bleed or cause scarring of the retina.
sIn laser photocoagulation for diabetic retinopathy, laser energy is aimed at certain areas of the retina to prevent abnormal vessels from growing or shrink those that may already be there. Sometimes it is done to make edema fluid in the center of the retina (macula) go away.
This surgery may also be used to treat the following eye problems:
• Retinal tumor
• Macular degeneration, an eye disorder that slowly destroys sharp, central vision
• A tear in the retina
• A blockage of the small veins that carry blood away from the retina
• Retinal detachment, when the retina in the back of the eye separates from the layers below