On a visual backward masking task using color stimuli with an achromat
ic patterned mask, we compared the masking performances of 3 Type I di
abetics with those of 9 participants in a control group. Analysis indi
cated that the diabetics show a marked decrement in performance with b
lue stimuli and a lesser decrement with red stimuli. Suggestions for f
urther theoretical and parametric studies are discussed.