In order to assess the possible relationship between ocular antioxidant status and best-corrected visual acuity or visual field in RP patients, we first assigned to each individual a value between 0 (lowest antioxidant status) and 1 (highest antioxidant status) computed through fuzzy clustering classification according to their NOX, SOD3, protein and TAC values (Fig. 4). This evidence concerns the gene SOD3 and retinitis pigmentosa 1.