Editor,—A 56 year old man was referred to the ocular oncology service with complaints of pain, redness, and blurring of vision in his left eye for the previous 2 months. He had no significant past ocular history. He was a known hypertensive with no known allergies.

On examination his visual acuity was 6/18 in the right eye and 6/6 in the left eye. There was 2 mm of relative exophthalmos on the right side. A pink subconjunctival patch was noticed in the superior quadrant (Fig 1). He had a shallow anterior chamber. Gonioscopy showed that anterior bowing of the iris closed 270 degrees of the angle. A YAG iridotomy was performed and pupils dilated …