In 329 cases that had undergone YAG laser posterior capsulotomy after uncomplicated cataract surgery with implantation of a posterior chamber intraocular lens, 32.8% developed both early and late complications. In 19.8% we found an increase in intraocular pressure (IOP), and 95.4% of the cases appeared within 1 month after the capsulotomy. One case of increased IOP needed surgical treatment for glaucoma after unsuccessful conservative therapy. Macular edema developed in 7.9% of the cases and retinal detachment in 3%. Two characteristics of retinal detachment were an axial length of more than 26 mm and the development of vitreoretinal proliferation.