To present a case with repeated episodes of flat anterior chamber (AC) after Ahmed valve implantation, and to suggest a simple suturing procedure to manage these recurrences.

After Ahmed value implantation, anterior chamber became flattened spontaneously on postoperative day one. Therefore, we filled the AC with air at the first attempt but this procedure was failed a day later. Then, we filled the AC with an ocular viscoelastic device. Because of failure of these procedures to keep the AC formed, we hypothesized that it may be a malfunctioned valve. Therefore, we inserted a 5-0 Nylon in Ahmed tube through AC and fixed it to the subconjunctiva two days after the second procedure.

Anterior chamber remained deep and anterior chamber shallowing did not occur despite removing the suture 2 weeks after the insertion. The IOP was well controlled with a functional filtering device at the last follow–up visit 4 months after the surgery.

spontaneous episodes of flat AC after Ahmed valve implantation in an eye can be well managed by inserting a removable suture into the Ahmed valve tube.