Colour blindness

Do you know what is colour blindness? Today we read about it and now I am sharing with you.

Some people are colour blind which means they can’t see the difference between colours such as red, green and blue. The retina of the eye has cones and rods in it. The cones help our eyes to find light, to see different colours. Some people are colour blind therefore they cannot see normally because one of the colour cells may not be working.