Evaluating the Efficacy of Fenestrations in Tube Shunt Implants During the Early Postoperative Period

This study evaluates two different methods of controlling intraocular pressure in nonvalved aqueous tube shunts immediately after implantation; needle fenestrations or a suture wick.

This is a prospective, randomized control study of glaucomatous eye undergoing tube shunt implantation using a nonvalved implant for poorly controlled glaucoma of any type. Eyes scheduled to receive a nonvalved tube shunt implant will be randomized to receive either needle fenestration(s) or a suture wick using a single 10-0 vicryl anterior to the ligature. The operative quadrant will be imaged using anterior-segment optical coherence tomography at pre- and post-operative visits.