Materials and Methods: Thirty six patients which underwent trabeculectomy; 25 of these patients were phakic (Group 1) and 11 were pseudo phakic (Group 2) and 23 patients which underwent phaco-trabeculectomy (Group 3) were included in this study. Bestcorrected visual acuity (BCVA), IOP, and anti-glaucomatous drug information before and three months after surgery were registered and evaluated statistically.

Results: It was found that there wasn?t a statistically significant difference between phaco-trabeculectomy and trabeculectomy groups regarding the preoperative mean IOP. Between the mean IOP of the three groups was observed a significant decrease after surgery compared to that before surgery. On the postoperative first day, in pseudophakic eyes after trabeculectomy, the numerical decrease in IOP was more significant than in the other groups, however, was not statistically significant. At the end of the third month, the mean IOP among the three groups was not different. It was found that there wasn?t a statistically significant difference among the three groups regarding the addition of anti-glaucomatous drops. Although it was not statistically significant among the study groups regarding BCVA, a significant increase was observed in visual acuity, especially in patients who had undergone phaco-trabeculectomy.

Conclusion: Our study suggests that there is not a statistically significant difference regarding the effects of phaco-trabeculectomy and trabeculectomy on IOP reduction. Keywords : Intraocular pressure, trabeculectomy, phaco-trabeculectomy, phakic, pseudophakic