highly significantp < 0.001
Similar to the ERG data, the central foveal thickness and mean retinal thickness in the right and left eyes of patients showed highly significant correlations (r 2 = 0.45, p < 0.001; and r 2 = 0.71, p < 0.001, respectively), and we therefore used only the SD-OCT data obtained from the right eye of all subjects for further analysis.