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Table 2 Summary of key MicroShunt efficacy outcomes at Years 1–3 [9]

From: Ab externo implantation of the MicroShunt, a poly (styrene-block-isobutylene-block-styrene) surgical device for the treatment of primary open-angle glaucoma: a review

 BaselineYear 1Year 2Year 3
 Mean medicated IOP, mmHg ± SD23.8 ± 5.310.7 ± 2.811.9 ± 3.710.7 ± 3.5
 Mean number of glaucoma medications per patient ± SD2.4 ± 0.90.3 ± 0.80.4 ± 1.00.7 ± 1.1
 Qualified success,a %1009195
  1. aQualified success was defined as IOP ≤ 14 mmHg with a ≥ 20% reduction in IOP from baseline, with or without glaucoma medication and with no reoperation for glaucoma
  2. IOP = intraocular pressure; SD = standard deviation