Nonpenetrating deep sclerectomy versus trabeculectomy in bilateral primary open-angle glaucoma.

Objective: To establish the efficacy and safety of nonpenetrating deep sclerectomy versus trabeculectomy in primary open-angle glaucoma.

Design: Prospective randomized trial.

Participants: Thirty-nine patients (78 eyes) with bilateral primary open angle glaucoma were included in the study.