Vitrectomy techniques and instrumentation have been used successfully to treat a number of conditions in the anterior segment. These include: 1) vitreous in the anterior chamber, 2) inadequate pupillary openings, 3) lens surgery, 4) epithelial downgrowth, 5) hyphemas, and 6) certain glaucomas. These methods offer several advantages to the anterior segment surgeon. The advantages are primarily those of a well-controlled tissue excision system, maintenance of the normal shape of the globe, and ability to control intraocular pressure. ACKNOWLEDGMENTS This work was supported in part by the...