Figure 2
From: Influence of retinopathy on the achromatic and chromatic vision of patients with type 2 diabetes
Monocular colour vision of diabetic patients evaluated with the FM 100 hue arrangement test (A-C). Individual results for three subjects of each group: (A) controls, (B) diabetic patients without retinopathy, and (C) diabetic patients with retinopathy. Diabetic patients made more mistakes than controls, but the errors were diffusely located in the FM 100 colour space without preference for any colour vision axis. (D) Box plots of the FM 100 error scores (log10 values). The control group made smaller numbers of mistakes than the two diabetic groups (p < 0.05). There was no difference between diabetic groups. DM 2: type 2 diabetes. Q1: First quartile. Q3: Third quartile. R = red, Y = yellow, G = green, B = blue, P = purple.