Retrospective Study of 2-year Clinical Outcomes of Combination Ab-Interno Canaloplasty and a Microstent Compared to Ab-Interno Canaloplasty in Cataract Surgery Patients.

Purpose: To evaluate the postoperative outcomes of patients undergoing cataract surgery, OMNI canaloplasty, and Hydrus Microstent implantation compared to patients undergoing cataract surgery with OMNI canaloplasty alone. Methods: This was a retrospective, single surgeon study. Eligible charts were from adults that had a diagnosis of mild to moderate primary open angle glaucoma and preoperative mild to moderate visual field loss. Outcome measures included mean number of ocular hypotensive medication prescribed, intraocular pressure (IOP), number of glaucoma secondary surgical interventions (SSI), and visual field mean deviation and pattern standard deviation. Data were collected up to 24 months postoperatively. Results: The chart review has identified 45 eyes in the Hydrus/OMNI Group and 35 eyes in the OMNI Group. The mean number of glaucoma medications improved from 2.9 preoperatively to 2.1 at 24 months postoperatively in the Hydrus/OMNI Group compared to 1.9 preoperatively to 1.6 at 24 months postoperatively in the OMNI Group. Mean postoperative IOP was stable in both groups. Conclusion: The results of this study suggest that after both combination cataract, Hydrus Microstent/OMNI surgery and combination cataract and OMNI surgery, the number of glaucoma medications was reduced for 2 years postoperatively, but the reduction was not significantly different between groups.