Materials and Methods: Patients who applied to Ankara University, Faculty of Medicine, Department of Ophthalmology and underwent standard trabeculectomy surgery were included in our retrospective study. All patients underwent a complete ophthalmic examination, including best corrected visual acuity (BCVA) with Snellen charts, slit lamp biomicroscopy, gonioscopy, Goldmann applanation tonometry, fundus ophthalmoscopy and visual field tests (Goldmann or Humphrey). Cases with intraocular pressure (IOP) of 21 mmHg and below with and without antiglaucomatous medications were successfully considered.

Results: A total of 58 eyes of 54 patients were included in the study. The mean follow-up period was 36±18.6 months. The mean preoperative IOP was 30.2±7.0 mmHg. At the end of the follow-up period, the IOP was significantly reduced to a mean of 17.9±6.1 mmHg (p<0.001). At the end of the follow-up period, the rate of cases with IOP below 21 mmHg with and without antiglaucomatous medications was determined as 88%. Preoperatively the mean number of topical IOP lowering medications used was 3.0±0.89 and declined to 0.86±0.94 at the last visit (p<0.001). The most common complication was cataract formation (7 eyes, 12%).

Conclusion: Trabeculectomy without the use of adjunctive antimetabolites appears to be highly successful in low-risk glaucoma cases over a three-year follow-up period. Keywords : Trabeculectomy without antimetabolites, low-risk glaucoma, bleb, intraocular pressure