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 ...

There’s just something about red. Bold, fiery, commanding — red knows how to catch your attention. Accordingly, you might not be surprised to learn all the powerful concepts the color can represent.

Red-green color blindness is the most common type of color deficiency. Also known as deuteranopia, this is most likely a congenital condition, meaning that you’re born with it. If you have this type ...