a technique using intense light energy, as from a laser, to produce scar tissue: used in treating certain eye disorders, in medical and biological research, etc.
See photocoagulation in American Heritage Dictionary 4
(fōˌtō-kō-ăgˌyə-lāˈshən)
noun
Surgical coagulation of tissue by means of intense light energy, such as a laser beam, performed to destroy abnormal tissues or to form adhesive scars, especially in ophthalmology.