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 ...

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.