Question: what is colour blindness?

Natt Day answered on 17 Jun 2015:

Hi,

Colour blindness is when a person is unable to see colours– or tell certain colours apart– under normal lighting conditions. It’s normally an inherited condition from your Mum’s X-chromosome which is why more boys have colour blindness than girls.

The genetic mutation leads to the colour sensing retinal cones in the eye developing abnormally and not having the right photopigments. Hence people end up not being able to distinguish certain colours and instead it just looks grey to them.

Natt