Neodymium: YAG laser posterior capsulotomy: visual acuity outcome and intraocular pressure elevation.

A Q-switched neodymium: YAG laser was used to perform 67 posterior capsulotomies in 67 patients. A clear visual axis was produced in all the eyes. The visual acuity improved by one or more Snellen lines in 90% of the eyes, and the final visual acuity was 20/40 (6/12) or better in 78% of the eyes. Cystoid macular edema developed in two patients after capsulotomy. Increases in intraocular pressure were most prevalent in the early postoperative period. No significant correlation was found between the acute pressure rise and the laser energy used, a previous history of glaucoma or the presence of an intraocular lens. After 6 months of follow-up none of the eyes showed a permanent pressure elevation.