Contrast sensitivity in diabetic subjects with and without retinopathy.
D000328:Adult; D000368:Aged; D003920:Diabetes Mellitus / Q000503:physiopathology*; D003930:Diabetic Retinopathy / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D013028:Space Perception; D014787:Vision Tests