There are three main types of color vision deficiency: red-green, blue-yellow, and complete. Color blindness, or color vision deficiency, affects the way you perceive color and can make it hard to ...

Color blindness, or color vision deficiency, causes a person to see colors differently from most other people. There are several types of color blindness. Color vision deficiency or loss has multiple ...

To understand what causes color blindness, you need to be cool with cones and what they do. No, not ice cream cones! We're talking about the cones in your eyes. At the very back of your eye is the ...