• Acute angle-closure glaucoma developed in three adults who were being followed up for stable cicatricial retinopathy of prematurity. After medical therapy succeeded in breaking the attack of angle-closure glaucoma, two of the patients were treated with surgical peripheral iridectomy and one patient was treated by argon laser iridotomy. All three of the patients had stabilization of their intraocular pressure and preservation of their visual acuity during follow-up of 2½ to five years' duration.