Materials and Methods: Between January 2018 and December 2023, 70 eyes of 70 patients who met the inclusion criteria were included in the study. The medical records of all patients and retinal nerve fiber layer (RNFL) parameters obtained by optical coherence tomography (OCT) were retrospectively reviewed; examination findings and OCT data were recorded.

Results: The mean intraocular pressure (IOP) of patients under maximum medical treatment before surgery was 27.79 ± 7.29 mmHg, while this value decreased to 14.26 ± 3.53 mmHg six months after surgery. A statistically significant difference was found between IOP values before and after surgery (p<0.001). However, no statistically significant difference was found between the mean central RNFL thickness values before and after surgery. The average number of medications used in glaucoma treatment decreased from 3.49 ± 0.88 drops/day before surgery to 2.44 ± 1.15 drops/day six months after surgery. The decrease in the number of medications used was also found to be statistically significant (p<0.001).

Conclusion: Cataract surgery is an effective and safe option for controlling IOP in patients with ACG and may be considered as a firstline treatment in suitable patients. Surgery may contribute to structural stability by limiting RNFL thinning; however, patient selection should be based on individual characteristics. Keywords : Intraocular Pressure, Angle Closure, Glaucoma, Cataract