Color blindness is a kind of blindness where people can see object that exist in the world but cannot identify the difference between the color of any object. For instance, the color red, green and yellow are seen as different shades of gray.

Some people may see red as green. People who suffer from this blindness may not get the driving license due to failure in color idenfication. The color blindness was first studied by John Dalton, an English chemist, and that is why color blindness is also reffered as "Daltonism" in medical terms. 


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