Are you one of the 300 million people affected by color blindness? Take this simple, doctor-approved test to determine your ...

You may know someone who can’t tell the difference between specific colors — and there is a scientific reason it could be happening. The condition is known as color blindness. To share a better ...

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 ...