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Kaplan-Meier survival curves with 95% confidence intervals comparing IOP lowering success of cataract surgery with iStent and cataract surgery without iStent in Caucasian subjects only. Univariate Cox proportional hazard model based hazard ratio was 2.86 (CI 1.33–6.14, p=0.007). CE = cataract extraction; CE-IS = cataract extraction with iStent. Numbers above X axis indicate the number of eyes at risk at each time point.
