Morbidity following prolonged postoperative hypotony after trabeculectomy.

The postoperative course of a series of 54 patients that had undergone primary trabeculectomy for open-angle glaucoma is reviewed. Almost one third of the eyes had prolonged postoperative hypotony with an intraocular pressure less than 8mm Hg for more than 2 weeks. The possible significance of prolonged hypotony and choroidal effusions is discussed in relation to the final intraocular pressure and the effect on visual acuity.