Changes In Refractive Error After Ab-Externo Xen-Gel Glaucoma Microstent Implantation
Published 2024 - 42nd Congress of the ESCRS
Reference: PO1068 | Type: Poster | DOI: 10.82333/wk7n-sb93
Authors: Dominik Dygas 1 , Wojciech Maruszczyk* 1 , Mateusz Porwolik 2 , Marcin Proniak 1 , Mariola Dorecka 2 , Adrian Smedowski 3 , Ewa Mrukwa-Kominek 2 , Dorota Wygledowska-Promienska 2
1Department of Ophthalmology,Prof. K. Gibinski University Clinical Center, Medical University of Silesia in Katowice,Katowice,Poland, 2Department of Ophthalmology,Prof. K. Gibinski University Clinical Center, Medical University of Silesia in Katowice,Katowice,Poland;Department of Ophthalmology,Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice,Katowice,Poland, 3Department of Ophthalmology,Prof. K. Gibinski University Clinical Center, Medical University of Silesia in Katowice,Katowice,Poland;Department of Ophthalmology,Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice,Katowice,Poland;GLAUCOTECH SP. Z O.O., KATOWICE,Katowice,Poland
Purpose
The purpose of the study was to evaluate changes in refractive error following uncomplicated Ab-externo XEN-Gel Glaucoma Microstent implantation. Ab-externo Xen-Gel Glaucoma Microstent implantation has emerged as a minimally invasive procedure for managing glaucoma. However, its impact on refractive error remains underexplored.
Setting
Patients with diagnosed glaucoma were selected to the study. We included 20 adult patients (21 eyes) with various open angle glaucoma subtypes. All of them underwent XEN-Gel Ab-externo implantation procedure at Department of Ophthalmology, Prof. K. Gibinski University Clinical Centre, Medical University of Silesia in Katowice. Subconjunctival Mitomycin-C was administered. We evaluated both phakic and pseudophakic patients.
Methods
In this retrospective study, we assessed alterations in refractive error up to six months following the operative procedure. The sutures were excised at the one-month postoperatively. Preoperative and postoperative refractive error measurements were recorded using standardized techniques. Measurements were performed utilizing an autokeratorefractometer considering the error at the level of ±0.25 diopters. We included changes in spherical correction, astigmatism and spherical equivalent (SE).
Results
Findings from our study indicate significant alterations in refractive error following Ab-externo Xen-Gel Glaucoma Microstent implantation. Specifically, a trend in the first three months was observed postoperatively, astigmatism also demonstrated variations. However in 6 months after surgery, no further significant changes were noted. Our observations may be attributed to the use of medications as well as the effects of the applied sutures.
Conclusions
Ab-externo Xen-Gel Glaucoma Microstent implantation appears to induce changes in refractive error with potential implications for postoperative visual outcomes. Further investigation with larger sample sizes and longer follow-up durations is warranted to validate these findings and elucidate underlying mechanisms. Understanding the impact of this procedure on refractive error is crucial for optimizing surgical outcomes and enhancing patient satisfaction in glaucoma management.