Definitions for "Color Deficiency"
Color deficiency is a lack of the ability to discriminate between colors. Designs that rely totally on color to convey essential information will be inaccessible to a small percentage of women and a larger percentage of men.
inability to distinguish some colors and shades; occurs when the color-sensitive cone cells in the retina do not properly pick up or send normal color signals to the brain
(Color blindness) Inability, partial or complete, to discriminate among colors.