High-Frequency Deep Sclerotomy in the Treatment of Primary Open-Angle Glaucoma in Pseudophakics: Our Experience at ECWA Eye Hospital, Kano, Nigeria

Background: High-frequency deep sclerotomy (HFDS) is one of the treatment options for glaucoma and can be combined with cataract surgery when both conditions coexist. The procedure is also a good option to treat pseudophakics—found to have glaucoma after cataract surgery—that are not responding to treatment. The aim of this study was to assess the efficacy and safety of HFDS in treatment of primary open-angle glaucoma (POAG) in pseudophakics. Subjects and Methods: This was a retrospective study of 34 patients who had HFDS in 2021. The intraocular pressures (IOPs) were obtained from the records of only 20 patients who completed 12 months of follow-up. The MS Excel was used for the data compilation and description, and the Student t test was used for analysis. Result: The mean age of the patients was 65.9 ± 16.8 years consisting of 15 male patients and 5 female patients. The average preoperative IOP was 21.1 ± 6.9 and 14.25 ± 2.79 mm Hg postoperatively with P = 0.000563. Conclusion: HFDS being a minimally invasive technique is a viable option for lowering IOP in patients with POAG who had cataract surgery with posterior chamber intraocular lens. We recommend HFDS as a safe procedure that allows other conventional interventions for glaucoma treatment if further IOPlowering effects are needed in the future.