The effect of repeating full-circumference argon laser trabeculoplasty.

Seventeen eyes of 16 patients who were classified as treatment failures following 360 degrees of argon laser trabeculoplasty underwent repeat treatment of the meshwork with the argon laser. Average intraocular pressure was significantly reduced from 22.5 +/- 6.8 to 19.3 +/- 6.1 mm Hg (P less than 0.05). Fifty-three percent of cases had a reduction and 12% had an increase in intraocular pressure of greater than or equal to 3 mm Hg at an average follow-up of 12 weeks. Visual function was not stabilized in 41% of the cases with 29% requiring further glaucoma surgery.