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Kaplan–Meier survival curves for the success criteria comparing UG and POAG. (a) and (b) contain all 100 eyes. (c) and (d) show the results excluding phaco-combined procedure (84 eyes). Criterion: (a) and (c), IOP <18 mmHg and >20% reduction from baseline; (b) and (d), IOP <15 mmHg. There was no significant difference between UG and POAG in each criterion (P=0.57, 0.33, 0.99, and 0.26, respectively).
