Material and Methods: We included the POAG cases with cataract who had underwent combined phaco-trabeculectomy to this retrospective study. The age, sex, preoperative and postoperative 6th month visual acuity (VA) according to LogMAR, intraocular pressure (IOP) measured by Goldmann applanation tonometer, keratometry values (K), central corneal thickness (CCT), corneal volume (CV), anterior chamber depth (ACD), and anterior chamber angle (ACA) measured with corneal topography were recorded.

Results: Sixteen (29.62%) of the patients were female, 38 (70.37%) were male. The average age was 61.6±15.1 (28-83). The VA was 0.7±0.2 in the preoperative period and 0.47±0.1 in the postoperative 6th month according to the logMAR (p<0.05). The mean IOP was measured as 35.5±12 mmHg under maximum medical treatment in the preoperative period, and was measured as 11.7±2.9 mmHg without any treatment in the postoperative 6th month (p=0.00). During follow-up, none of the patients had increased IOP at the level that required medical treatment. There were no signifi cant differences in K values, CV and CCT between the preoperative and postoperative 6th months? values (p>0.05). ACD and ACA showed a signifi cant increase in the postoperative period (p=0.00, p<0.029).

Conclusion: Combined phaco-trabeculectomy led to an increase in the mean visual acuity as well as effective IOP reduction. In addition, changes in anterior segment parameters were shown in the postoperative period in patients undergoing phaco-trabeculectomy, and it was thought that this may have effects on refraction and IOP. Keywords : Combined phaco-trabeculectomy; keratometry; anterior segment parameters.