Figure 1From: Oxidant/antioxidant state in tissue of prymary and recurrent pterygium All patients. Levels of NO (A), TAS (B), GPx (C), SOD (D) and CAT (E) in the three groups: control group (C); the primary pterygium group (PP); and the recurrent pterygium group (RP). n = number of patients. * - p < 0.05, ** - p < 0.01 compared to the control group. & - p < 0.05, & & - p < 0.01 compared PP and RP groups.Back to article page