RESUMO
To assess the outcome of surgical intervention for bleb encapsulation after Ahmed implant. We reviewed the records of 9 patients who developed bleb encapsulation after Ahmed implant and who underwent bleb revision because of uncontrolled glaucoma despite medical treatment. After a mean follow-up of 36 months [range 2 to 84], the mean intraocular pressure [IOP] after bleb revision [16.6 +/- 4.3] was significantly lower than the mean preoperative IOP [28.7 +/- 5.3] [P value <0.05]. Successful outcome was defined as a final IOP between 6 and 22 mmHg with the same or less medication than pre-operatively; this was achieved in seven eyes [77.80%]. Capsular excision after failure of an Ahmed Glaucoma Valve caused by fibrous encapsulation is a useful approach for re-establishing function and lowering the IOP