Intraluminal deposits: A rare cause of glaucoma drainage implant total obstruction.

Our study describes a new cause of total GDI tubes. The long-term use of timolol maleate and brinzolamide and their presence in the intraluminal solid sample collected from the blocked GDI tube suggest that the glaucoma medication may have a role in the pathogenesis. However, the exact mechanism is unknown and requires further studies.