Fig. 4. Sector iridectomy in patient with chronic iridocyclitis. In patients with uveitis, laser iridotomies frequently close or are initially unsuccessful . Surgical iridectomy is then required. Sector iridectomy may be preferable to peripheral iridectomy in that the sector iridectomy will permit visualization of the fundus and may delay the need for cataract surgery by allowing the patient to see around a posterior subcapsular cataract.