BACKGROUND: To evaluate and compare the efficacy of a single Hydrus and double iStent METHODS: The study was designed as a prospective comparative case series. Patients with POAG undergoing trabecular microbypass stent insertion in addition to cataract surgery were recruited and consent was obtained. Baseline demographic information and preoperative, intraoperative and postoperative outcomes including intraocular pressure (IOP), visual acuity and topical glaucoma medication use were recorded and analysed. Treatment outcomes were analysed after propensity score matching to adjust for baseline differences between the two groups. Primary success was defined as an IOP of ≤18 and ≥20% IOP reduction at 12 months
other outcomes included IOP ≤15 mm Hg and ≤21 mm Hg. These were measured against complete success (no medications) and qualified success (one or more medications). RESULTS: The study comprised 85 eyes in the Hydrus group and 100 eyes in the iStent CONCLUSION: After adjusting for baseline differences, there was no statistically significant difference between combined Hydrus microstent implantation and cataract surgery when compared with the iStent