Techniques of argon laser photocoagulation of diabetic disk new vessels.

Four argon laser techniques have been evaluated in the eradication of diabetic disk neovascularization: focal (nonfeeder) photocoagulation, feeder-frond photocoagulation alone, panretinal photocoagulation alone, and feeder-frond treatment combined with panretinal photocoagulation. Focal photocoagulation was dangerous and the least effective technique in preventing recurrence of neovascularization. Feeder-frond photocoagulation was effective initially, but was associated with a high incidence of recurrent neovascularization.

Argon laser photocoagulation in the treatment of presumed histoplasmic choroiditis.

Our experience with the evolving techniques we have reported has not resulted in significant increases in visual acuity over pretreatment levels. However, argon laser photocoagulation, properly given, does destroy subretinal neovascularization. The most significant points of technique are (1) heavy treatment of the entire frond; (2) accomplishment of this usually by a 200-mu spot size, 0.

Corneal Damage Thresholds for CO(2) Laser Radiation.

A gaussian beam from a CO(2) laser emitting at 10.6 mu was used to measure damage thresholds on rabbit cornea at exposure times of 55 msec, 10 msec, and 3.5 msec.