IL6 and open-angle glaucoma: For example, Borkenstein et al. [39] and Takai et al. [40] have demonstrated that IL-6 concentrations in the AH of patients with POAG are significantly lower than those found in a control group of cataract patients; Kuchtey et al. [28] reported no substantial variation in IL-6 concentrations in the AH when comparing POAG patients to the cataract control group.