Ab Interno Removal of Malpositioned Ex-Press Shunt

The authors describe in two cases an ab interno technique for removal of a failed or malpositioned Ex-Press shunt.The patient in the first case had well-controlled IOP but developed debilitating ocular pain due to a malpositioned shunt. Following removal of the device, her pain was successfully treated and bleb function preserved. This technique was used in a second case with a failed bleb and a well-positioned device.