Six of the included studies (Soufi et al., 2012; Ghadiri Soufi et al., 2015; Chen et al., 2018; Dong et al., 2019; Nguyen et al., 2022; Ji et al., 2024) reported the effects of resveratrol on IL-6 levels in animal models with retinal disease (experimental group, n = 34; control group, n = 34). Here, IL6 is linked to Abnormal retinal morphology.