Colour blindness, a hazard to diabetics.
D003117:Color Vision Defects / Q000150:complications*; D003920:Diabetes Mellitus / Q000652:urine*; D006029:Glycosuria / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D012656:Self-Help Devices