EPO and cataract: Wang et al. [17] report that, compared to the control group with cataracts and a mean IOP of 12.0±0.8, the aqueous concentration of EPO in eyes with POAG, primary chronic angle-closure, primary acute angle-closure, and NVG were statistically significantly higher with mean±SD IOP of 25.9±1.0, 32.0±1.9, 30.7±2.1, and 36.8±6.3, respectively.