Fig. 2
From: Assessing amblyopia treatment using multifocal visual evoked potentials
Box plots of data show the mean amplitude of multifocal visual evoked potentials in rings at diagnosis and after occlusion treatment of amblyopia. In amblyopic eyes, the values of the rings did not differ significantly at the time of diagnosis (p = 0.391, Friedman test). After treatment, however, the value in ring 1 (central field) was significantly higher (p = 0.001, Friedman test) than that of the other rings (Wilcoxon test): rings 1 vs. 2 (p = 0.042); rings 1 vs. 3 (p = 0.003); rings 1 vs. 4 (p = 0.006), rings 1 vs. 5 (p = 0.004); rings 1 vs. 6 (p = 6 0.033)