Similarly, we observed weak positive correlations between the clinical classification of AMD and RBC GPx (Rs = +0.10, p = 0.07), PLT catalase (Rs = +0.10, p = 0.08) and R-GSSG PLT (Rs = +0.10, p = 0.08) activities that corresponded to higher activities of these enzymes in RBCs and PLT from patients with AMD. Here, CAT is linked to age-related macular degeneration.