The commonest laser used is an Argon laser. In the early stages the laser is used leaking areas from the blood vessels. The laser produces a small scar that helps seal the leak. The aim is to produce disappearance of the new vessels. This form works by increasing the oxygen supply to the retina.
Laser surgery is usually an outpatient procedure.
First , a local anaesthetic drop is instilled in the eye. A contact lens is put on the eye. This lens has mirrors that help to direct the laser light to the retina. The treatment is usually painless. It can take upto 60 minutes to complete the treatment.