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Goniotomy

A goniotomy is a surgical procedure primarily used to treat congenital glaucoma. The purpose of a goniotomy is to clear the obstruction to aqueous outflow from the eye, which in turn lowers the intraocular pressure (IOP). Lowering the IOP helps to stabilize the enlargement of the cornea and the distension and stretching of the eye that often occur in congenital glaucoma. The size of the eye, however, will not return to normal. Most importantly, once the aqueous outflow improves, damage to the optic nerve is halted or reversed. The patient's visual acuity may improve after surgery. Goniotomies are commonly performed to treat the following eye disorders: Congenital glaucomas. Aniridia. Aniridia is a condition in which the patient lacks a visible iris. A goniotomy is performed as a preventive measure, as 50%--75% of patients with aniridia will develop glaucoma. Uveitic glaucoma associated with juvenile rheumatoid arthritis. Maternal rubella syndrome. JOAG.