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 ...

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 ...

Vernon and Straker 1 claim that 5·37–9·45 per cent of colour blind men were found in Great Britain, according to district, averaging 7·49 per cent. This is about twice the accepted figure. They ...

Do you have a hunch that you don’t see colors as clearly you should? Ever been told that something has different shades, but they all look the same to you? If so, you could be color blind. Some people ...

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 ...