Can we cure colour blindness? © Getty Images

Can we cure colour blindness?

Colour blindness, otherwise known as colour vision deficiency, affects around 8% of men.

Asked by: Hugh Diskin, Australia

Advertisement

No, colour blindness (also known as colour vision deficiency) is caused by an inherited defect in the genes that code for the colour-sensitive proteins in the eye, leading to problems in the development of one or more of the three sets of colour sensing cone cells in the retina of the eye. Males are more likely to inherit this gene as it is passed on the X chromosome. As females have two X chromosomes, a defect in one is typically compensated for by the other.


Advertisement

Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.