Surgical and medical management of patients with narrow anterior chamber angles: Comparative results

We retrospectively reviewed case records of 70 patients (114 eyes) to assess long-term outcome of surgical and medical treatment of narrow anterior chamber angles. Fifty eyes had undergone a peripheral iridectomy, incisional or laser; 64 had been treated medically, without surgery. The two groups were not strictly comparable. (It is assumed but not proven that, since iridectomy was considered necessary in one group and not in the other, the surgically- treated patients were more seriously diseased.) Comparing clinical data obtained at the first visit with data obtained at the last visit, the eyes receiving iridectomies, as compared with those receiving medical treatment alone, showed a greater number of improved anterior chamber configurations (74% vs 28%), had a lower incidence of peripheral anterior synechiae (2% vs 10%), and required fewer glaucoma medications (30% fewer vs 10% fewer). The percentage of eyes with increased intraocular pressure was similar in both groups (36% vs 28%), as was the percentage of those with decreased visual field (17% vs 21%) and decreased visual acuity (66% vs 60%). No significant complications occurred in the eyes receiving laser iridectomies; however, one of the incisionally-treated eyes lost nine Snellen lines of vision.