Subretinal new vessels after krypton laser photocoagulation.

The eye of a patient with age-related macular degeneration was treated with krypton laser photocoagulation and later studied histopathologically. Five months after treatment the original membrane was completely obliterated, but a separate new membrane was found, which was fed by the retinal circulation and not by the choroid. The frequency of such recurrences is not known, but they may be related to krypton laser treatment.