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Table 1 Demographic and preoperative ocular characteristics

From: Long-term outcomes of two first-generation trabecular micro-bypass stents (iStent) with phacoemulsification in primary open-angle glaucoma: eight-year results

Variable 62 eyes of 47 subjects
Age at time of surgery (years) 68.6 ± 8.8
Sex (male:female), n (%) 29:33 (46.8:53.2)
Eye (OD:OS); n (%) 33:29 (53.2:46.8)
History of selective laser trabeculoplasty, n (%) 28 (45.2)
Central corneal thickness (μm) 545.7 ± 34.5
Axial length (mm) 24.0 ± 1.6
Anterior chamber depth (mm) 3.1 ± 0.4
Intraocular pressure (mmHg) 19.2 ± 3.9
Glaucoma medications 2.8 ± 1.1
Best-corrected visual acuity (logMAR) 0.17 ± 0.15
Cup-to-disc ratio 0.71 ± 0.16
Visual field mean deviation (dB)  − 5.9 ± 6.6
Retinal nerve fiber layer thickness (μm) 70.5 ± 13.7
Ganglion cell-inner plexiform layer thickness (μm) 64.4 ± 12.9
  1. Mean ± standard deviations are presented, where applicable