How good is your colour perception?
Does everyone see red in the same way? How about blue, green or yellow? Your colour perception depends upon how your brain and vision interact to interpret the light reflected from everything you see. We define this interaction as 'colour vision' – and it can be different in different people.
Unfortunately, roughly one in 12 men and one in 200 women among populations of European origin suffer from a condition popularly known as 'colour blindness'. Africans, Asians and Hispanics are also affected but at lower rates.
Colour blindness results from anomalies in the light-sensitive photoreceptors in the retina, a thin layer of tissue at the back of the eye that detects light. These photoreceptors contain pigment molecules that are
