When looking up on a cloudless night, do you notice that stars can sometimes show as different colors? You may even notice yellow, red, orange, and blue stars - not just white. A star's color can ...

The reason for this is both a fault in the stars and in ourselves: we don't see them as green because of the way stars emit ...

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 ...