EDN1 and glaucoma: The sensitivity analysis confirmed the results showing higher aqueous humor ET-1 levels for glaucoma patients by a pooled mean difference of 1.98 pg/mL ET-1 (95% CI: 1.36–2.60, p < 0.001), after funnel plot evaluation and 5 outlier studies removals, with moderate heterogeneity among studies (I2 = 73%, p < 0.001) (Figure 5, Panel B).