Fig. 13. Open-angle glaucoma secondary to uveal melanomas. (A and B) Seeding of the iris melanoma onto the anterior surface of the iris (arrows). Melanoma cells also cover the angle recess and trabecular meshwork (B, double arrow). (C) Ring melanoma involves the root of the iris and the anterior ciliary body over a full 360 degrees, with invasion of the anterior chamber angle structures. (A, H&E, × 7; B, H&E, × 100; C, H&E, × 7)