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Table 1 Summary of outflow facility and resistance studies

From: Hydrus microstent implantation for surgical management of glaucoma: a review of design, efficacy and safety

Publication Intervention N Anterior Segments Baseline Outflow Facility (μL/min/mmHg) Outflow Facility Post-Implant (μL/min/mmHg) p Baseline Outflow Resistance (mmHg/μL/min) Outflow Resistance Post-Implant (mmHg/μL/min) p
Camras et al. 2012 [39] Hydrus 15 mm 9 0.19 ± 0.02 0.39 ± 0.07 < 0.01
Controls 7 0.20 ± 0.03 0.23 ± 0.03 > 0.05
Gulati et al. 2013 [23] Hydrus 8 mm 24 0.33 ± 0.17 0.52 ± 0.19 < 0.001 4.38 ± 3.03 2.34 ± 1.04 < 0.001
Controls 24 0.39 ± 0.21 0.38 ± 0.19 0.82 4.30 ± 3.64 3.47 ± 1.68 0.31
Hays et al. 2014 [41] Hydrus 8 mm 12 0.28 ± 0.10 0.44 ± 0.13 0.001 4.30 ± 1.91 2.68 ± 1.16 0.0016
2 iStents 12 0.29 ± 0.09 0.37 ± 0.12 0.046 4.05 ± 1.42 3.17 ± 1.18 0.004