A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may ...

Our ability to see with color vision depends on the presence and function of light-sensing pigments in the cones of our eyes. Color blindness, or color vision deficiency, happens when one or more of ...

A confession: I am color blind. It's not that I can't see any colors—I had actually lived most of my life without being a bit aware of my condition—but when I'm presented with one of those tests where ...

Color blindness, also known as color vision deficiency, is the inability to see color distinguish colors. Color blindness affects a large number of individuals across the world, with approximately 8% ...

Colour blindness affects approximately one in 12 men and one in 200 women, which equates to 4.5 per cent of the population or around 2.7 million people in the UK, according to campaign group Colour ...

Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...

Also known as color deficiency, color blindness is when you can’t see colors as most other people do. You may have a hard time differentiating between certain colors, such as shades of red and green ...