For the past 12 years peripheral iridectomy has been used as the initial surgical procedure after an acute attack of angle-closure glaucoma. The operation has been performed 2 to 5 days after the pressure has been controlled medically and has been followed routinely by prophylactic peripheral iridectomy in the fellow eye. Peripheral iridectomy for primary acute angle-closure glaucoma controlled the condition without any need for further medical or surgical therapy in 72% of cases. Careful and frequent follow-up within the first 4 postoperative months is essential to prevent further field loss, which can occur very rapidly if the pressure is not adequately controlled. If the pressure remains uncontrolled, further surgery should not be delayed. It was impossible to decide which patients would eventually need trabeculectomy when they first attended in the acute attack. Peripheral iridectomy as a prophylactic procedure was entirely effective in preventing an acute angle-closure attack in the fellow eye.
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