Figure 1

Example of the testing sequence and interactive graph of contrast thresholds (mean and standard error) from diabetic patients and controls. The pulsed-pedestal paradigm and pedestal-△-pedestal paradigm are shown in (A) top and (A) bottom, respectively. Data (B) is for the pulsed-pedestal paradigm and data (C) is for the pedestal-△-pedestal paradigm. Contrast thresholds of the no-DR, NPDR, and PDR groups were compared with the control group (*p < 0.05, ^¶0.05 ≤ p < 0.1).