Colour blindness is a sight-related disease that causes the sufferer to have a visual impairment in colour perception. Many people wonder whether colour blindness is a hereditary or contagious disease, and others also wonder why many boys suffer from the disease more than girls. Stay with us to follow the cause of colour blindness and how it manifests itself in this article.

What causes colour blindness?

Before discussing the causes of colour blindness, it is important to dispel the assertion that only boys suffer from colour blindness. It is true that according to statistics, the rate of boys suffering from colour blindness is relatively high, but there are many girls who also suffer from the disease. There are many causes of colour blindness, but the cause of colour blindness in many people is hereditary. In the case of heredity, the disease is carried by the 23rd pair of chromosomes responsible for sex in humans. It is the x chromosome that carries the disease. So the probability of women being ill is low because the gene responsible for the disease is recessive. It is important to know that there are other forms of colour blindness that are carried on an autosome (not linked to sex) that attack both girls and boys in the same proportion. The best thing would be to detect cases of colour blindness in children quickly so that they are not penalised for nothing, especially at school.

What do colour-blind people see?

Many people think that colour-blind people are blind and cannot see anything. This is really not the case, colour blind people see everything just like a normal person, only they cannot distinguish correctly between the colours red, green or blue. In some cases where the disease is severe, the patient cannot distinguish any colour. But it is necessary to remind you that certain chronic diseases can cause people to become colour blind. We have for example, diabetes and certain cardiovascular diseases.