Limitation of iris and ciliary body resection in primates.

The authors evaluated the limitation of iridocyclectomy in primate eyes. Six-clock-hour resections were tolerated and the intraocular pressure was reestablished to preoperative levels (17 mm Hg) within 1 month after surgery. Seven- to eight-clock-hour resections were also tolerated by the eyes, but the intraocular pressure remained low (7-10 mm Hg) for the extent of the study (5 months). Eyes in which the vitreous fluid was replaced with Healon showed a trend toward faster recovery of the intraocular pressure than those having a physiologic saline solution.