Outcomes Of Four Different Glaucoma Surgery Treatments: Retrospective One Year Follow Up Study

Different surgical procedures are used to lower eye pressure and have to be chosen individually for each patient. The purpose of this retrospective study is to analyze the results of four different surgical glaucoma interventions, over a period of one year at a singular center.

All patients included in this study were recruited at the Department of Ophthalmology at Hanusch Hospital in Vienna.

215 patients, who underwent glaucoma surgery, were included into this retrospective study, of which 103 were men and 112 were women. The following surgical techniques were used: Trabeculectomy (146 patients), Xen 45 stent (22), Preserflo (43), and Ahmed implant (4). None of the patients has had surgery before.

The data collected were analyzed in terms of efficacy and complication rates, with particular attention to intraocular pressure (IOP), additional medications required, intra-/postoperative complications and secondary surgeries.

At 12 months after surgical treatment, the respective IOP reductions were 12.3±4.4mmHg for trabeculectomy, 14±5.6mmHg for Xen 45 stent, 12.1±3.7mmHg for Preserflo, and 17±2.8mmHg for Ahmed.

The number of IOP-lowering medication decreased consecutively from 3,31±0,99mmHg preoperatively to 0,77±1.35mmHg for trabeculectomy, from 2,73±1,39mmHg to 0,90±1,44mmHg for XEN 45, from 2,82±1,40mmHg to 0,96±3,83mmHg for Preserflo and from 3,5±0,5 to 0.5±0,7mmHg for Ahmed after one year.

All four surgical methods studied showed a significant reduction in eye pressure, as well as a significant reduction in the number of IOD-lowering medication needed after one year.