IL6 and cataract: So, we focused in the present study on evaluation of selected pro-inflammatory cytokines (IL-1β, IL-6, IL-8, IL-17A, and TNF-α), anti-inflammatory cytokines (IL-4, IL-10, and IL-13), and the IL-1 receptor antagonist (IL-1Ra) in the aqueous humor of FECD and/or cataract eyes.