Purpose: Glaucoma drainage devices (GDD) are used in the surgical management of medically refractory glaucoma. One late serious complication is erosion and exposure of the tube, clip, or plate.

Eight of the subjects had primary open-angle glaucoma ... With respect to erosion with exposure, there were 16 cases of tube erosion, 2 cases of plate erosion, and 2 cases of pars plana clip ...