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 ...

Learn about why people wear the color green on St. Patrick's Day! According to Irish folk tradition, wearing the color green makes you invisible to leprechauns, which like to pinch anyone they can see ...

Deuteranopia is a type of color blindness that affects shades of green. A person may be unable to see greens or distinguish between green and other colors. Color vision deficiencies, also called color ...