Materials and Methods: This study involved retrospective evaluation of patients who were followed up with POAG and secondary glaucoma in Istanbul Medical Faculty Department of Ophthalmology and undergone trabeculectomy between January 2005- December 2011 by the same surgeon. The outcome of surgeries were graded as: Complete Success: IOP between 6-21 mmHg without antiglaucomatous medication; Qualified Success: IOP between 6-21 mmHg with one or more antiglaucomatous medication; Failure: IOP ≥22 mmHg despite maximum medications or ≤5 mmHg.

Results: 39 patients (60.9%) were male, 25 patients (39.1%) were female. Mean age was 60.9±13.9 (11-85) years, mean follow-up time was 3.44±2.08 (1-7) years. POAG group included 31 eyes, secondary glaucoma group included 40 eyes (29 PEX glaucoma, 11 uveitic glaucoma). In POAG group at the first year we achieved 84% complete and 16% qualified success . In PEX glaucoma group we achieved 62% complete and 38% qualified success. In uveitic glaucoma group the success rates were 80% and 20%. The most common complications were cataract progression (25.4%) and early hypotony (19.7%).

Conclusion: Primary trabeculectomy was found to be successful in preventing the progression of glaucoma in the last postoperative period as in the early postoperative period in cases when the antiglaucamatous medication was insufficient or unsuitable . Early diagnosis and treatment of the complications are also important for the success rate of the surgery. Keywords : Trabeculectomy, glaucoma