Figure 1. EC-SOD levels in vitreous body and serum samples from PDR and MH patients. In the vitreous body from PDR patients, there was abundant EC-SOD compared to vitreous bodies from MH patients. In contrast, the serum concentration of EC-SOD was not significantly different between the two groups. Double asterisk (**) denotes p<0.01 based on the Kruskal–Wallis test.