Abstract

Purpose: To report a rare case of Ahmed Glaucoma valve(AGV) tube detachment from the plate
Material and methods: A regularly followed up patient who underwent AGV implantation for Secondary Glaucoma 11 years back. After 2 years of implantation, concurrent movement of AGV tube in the anterior chamber with eye movement was noted. Despite the tube movement the implant appeared to be functioning well with good intraocular pressure control until this year when he presented with detachment of tube from the plate.

Results: Immediate surgical removal of the detached tube in the anterior chamber was performed.

Conclusion: Although dynamic movement of AGV tube has been reported previously, Spontaneous detachment of AGV tube is a yet not documented complication. The proposed mechanism in this case appears to be the anterior migration of the encircling band leading to slow weakening of the plate tube junction and eventually tube detachment