Is there a cure for color blindness?

Generally, it is not possible.

Colour blindness is a visual defect. Lack of ability to distinguish one or more colors due to abnormal or incomplete photoreceptor pigmentation in the retinal cones. According to the clinical manifestations, it is divided into total color blindness and partial color blindness.

The feeling of not being able to distinguish colors at all and seeing only black and white and gray is called panchromatopia or monochromaticism. It is often accompanied by high photophobia, frequent blinking, significant vision loss, central scotoma, and day blindness. Losing the ability to distinguish a certain color is called partial color blindness.

Among them, those who cannot distinguish red are called red blindness or first color blindness, and the red part of the spectrum is shortened, green is seen as yellow, and purple is seen as blue; Those who cannot distinguish green color are called green color blindness or secondary color blindness, and green is seen as gray or dark black on the spectrum; Those who cannot distinguish blue are called blue blindness or third color blindness, and only red and green colors can be distinguished in the entire spectrum. Sometimes people with red-green color blindness can show an astonishing ability to distinguish between red and green color by their life experience, based on the different saturation and brightness of red and green, but the nature of color blindness is revealed when the color mixture assay is examined. Most of them are congenital, and they are green blindness, red color blindness, blue color blindness, and panchromatopsis according to the frequency of occurrence.

In the 20th century, Wilson proposed that color blindness is transmitted through X-sex linked inheritance, which is inherited by women, and it is dominant in boys and more asymptomatic in girls. Only when a female is recessively colorblind and a male with color blindness is combined, the resulting daughter is colorblind. Therefore, the incidence rate is about 5% in men and about 5% in women.

There is no special treatment for congenital color blindness**. Acquired color blindness is mostly caused by optic nerve diseases and retinal and choroidal diseases, the former is mainly red-green color blindness, and the latter is common with blue color blindness, which can be given differently**.

The genetic law of color blindness.

Color blindness is divided into two types: congenital and acquired, acquired color blindness is generally caused by fundus diseases, when there is eye disease, please seek medical attention in time, color vision can generally return to normal.

Congenital color blindness is a sex-linked hereditary disease (intergenerational inheritance, that is, male color blindness is passed from daughter to nephew), so far scientists have not been able to ** this kind of disease, and currently can only be corrected by colorblind glasses. However, colorblind people can avoid the recurrence of colorblind people in their offspring through eugenics.

Humans have 23 pairs of chromosomes, one of which is a sex chromosome. The female sex chromosome is xx and the male sex chromosome is xy. The colorblind locus is on the short arm of the X chromosome, while the Y chromosome is shorter and has no corresponding allele.

Therefore, as long as the male sex chromosome (XY) has a color blindness gene on the X chromosome, it is colorblind; A woman must have a color blindness gene on both X chromosomes in order to be color blind, and if only one X chromosome has a color blindness gene, she will not be color blind, but a gene carrier that can be passed on to her offspring. Hence she is called a mediator or a hidden color blind.