Posters

Efficacy of cataract surgery combined with concurrent trabecular micro-bypass stent implantation for patients with open-angle glaucoma

Poster Details

First Author: E.Drucka LATVIA

Co Author(s): A. Schuster   N. Pfeiffer   E. Hoffmann              

Abstract Details

Purpose:

The aim of this study was to evaluate the efficacy of a cataract surgery combined with concurrent trabecular micro-bypass stent implantation compared to a cataract surgery alone for reducing intraocular pressure (IOP), glaucoma medication and facilitating improvement in visual acuity to patients with open-angle glaucoma (OAG).

Setting:

Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz.

Methods:

This was a retrospective case series study including 25 eyes with concurrent open-angle glaucoma and cataract in each study group and control group. All patients underwent a cataract surgery alone (control group) or a cataract surgery and concurrent trabecular micro-bypass stent (iStent inject®) implantation (study group). The examination implied the analysis of IOP change, the number of glaucoma medication and visual acuity at the last follow-up visit. IOP was measured with Goldmann applanation tonometry. Visual acuity was described in LogMar scale. All data was analyzed by SPSS 22.0 and Mann-Whitney-U test was used to compare the two study groups.

Results:

The average follow-up time in the study group was 5.8±4.2 months but in the control group 3.1±2.2 months. No statistically significant difference was seen between the study and control group comparing the patients’ age (67.5±9.1vs.67.4±8.8,p=1.0), IOP (median 18.0vs.16.0 mmHg,p=0.63), number of glaucoma medication (median 3 in both groups,p=0.86) and visual acuity (median logMAR 0.3vs.0.3,p=0.22) preoperatively. At the last follow-up there was no statistically significant difference in IOP (15.5±3.2vs.16.1±3.5 mmHg,p=0.67) and visual acuity (median logMAR 0.1vs.0.2,p=0.11). Statistically significant lower number of glaucoma medication was seen in the study group (median 0 vs. 2,p=0.003) postoperatively.

Conclusions:

Cataract surgery combined with concurrent trabecular micro-bypass stent implantation not only improves visual acuity but also helps to obtain a better control over open-angle glaucoma. Combined surgery resulted in statistically significant decrease in the number of glaucoma medication than cataract surgery alone, while IOP was not different in the two study groups.

Financial Disclosure:

None