DR. SURBI TANEJA

DR. HARSH KUMAR

Abstract

Ahmed Glaucoma valve(AGV) is commonly done procedure nowadays for primary and secondary glaucomas. AGV has a siicone drainage tube and a silicone plate with an elastomer membrane for performing the valvular function. The drainage tube can be placed in anteriorly or posteriorly in the eye. The entry for the placement of the tube is usually done beneath a scleral flap (5*5mm) which leaves some of the tube exposed behind the flap that lies directly underneath the conjuctiva if not covered with scleral graft. It has been seen that in long term, this leads to tube exposure which can act as a nidus for infection. We present a case of a 60 year female who had undergone AGV 5 years back without patch graft and experienced tube exposure which was surgically managed with scleral graft on her followup.No recurrence was seen post surgery.

Therefore, using a scleral graft to cover the drainage tube prevents the tube exposure and saves the patient from undergoing re-surgery.