Cryotherapy is a technique in which a probe is used to briefly freeze the retina and adjacent eye wall. The freezing process will destroy or scar a small part of the retina. Freezing the retina is an effective way of eliminating abnormal tissue, or creating a weld between the retina and eye wall.
Local anesthetic is used to avoid pain. The cryoprobe is then placed against the eye wall and freezing treatment is performed. The procedure is very safe. Your eye will be swollen and red for several days following cryotherapy. Lubricating drops are useful to soothe the eye.