Fig. 6. A. After an acute attack of angle-closure glaucoma, the iris is necrotic. The clinical triad comprises irregular pupil, segmental iris atrophy (the iris from only the 5- to 9-o'clock positions is relatively normal), and glaukomflecken, tiny white anterior subcapsular lens opacities (inset). B. In this area, there is near-total iris necrosis (hematoxylin-eosin, × 10).