Tabriz University of Medical Sciences Medical Journal of Tabriz University of Medical Sciences 2783-2031 35 4 2013 10 06 Outcome of Trabeculectomy Procedure in Glaucoma 46 51 EN Rana Sorkhabi Ali Mahdavi Fard Babak Rahimi Journal Article 2012 12 16 2013 01 23 Backgrounds and Objective: Glaucoma is the most common cause of irreversible blindness in worldwide and trabeculectomy is the gold standard surgical treatment in these patients. Materials and Methods: In this study the medical recordings of the patients who underwent trabeculectomy surgery reviewed and patients recalled for examination. Results: Records of 209 trabeculectomy surgery were evaluated. Most of patients (96%) before their surgery had been received antiglaucoma medications and preoperative mean deviation in perimetry was -12±6.3 and mean cup to disc ratio was 0.79±0.2. Mean preoperative intraocular pressure was 30±9.7 mmHg which was decreased to 13.6±5.2 mmHg (P=0.001) after surgery. We re-examined 78% of patients and in theses patients mean intraocular pressure were increased to 16.8±4.3 mmHg (P=0.001). Conclusion: Most glaucoma patients underwent trabeculectomy in more advanced stage of disease; however success in early postoperative period is higher than 90%.