Materials and Methods: This single center case-control study included 53 glaucoma patients. All patients underwent detailed ophthalmic examination and phacoemulsification + intraocular lens (IOL) surgery. Furthermore, all examinations and surgeries were performed by the same physician. The glaucoma patients were then stratified into two groups according to their glaucoma diagnosis. The PEXG group consisted of 28 patients and the POAG group consisted of 25 patients. Finally, the vertical and horizontal capsulorhexis diameters of all patients were measured using slit-lamp biomicroscopy at 6 months postoperatively.

Results: Preoperatively, there were no differences between the two groups with respect to age, sex, cataract grade, intraocular pressure, axial length, central corneal thickness, anterior chamber depth, lens thickness, and white-to-white distance. In addition, at six months postoperatively, the two groups were similar in terms of surgically induced astigmatism, IOL power, spherical/aspherical IOL ratio, spherical equivalents, and predicted refractive error. However, the diameters of both the horizontal and vertical capsulorhexis were smaller in the PEXG group as compared to the POAG group.

Conclusion: Despite the challenges caused by the anterior capsule and weak zonules in PEXG patients, when we performed a central capsulorhexis with vertical and horizontal diameters between 4.8 and 5.5 mm, the predictive refractive error was similar to the POAG group. Keywords : Anterior capsulorhexis diameters, phacoemulsification, predictive refractive error, primary open-angle glaucoma, pseudoexfoliative glaucoma