Causes of color blindness

summary

The clinical classification of color vision disorders mainly includes two categories: one is low color recognition ability, which is called color weakness in medicine; the other is completely unable to recognize color, which is called color blindness in medicine. Let's talk about the causes of color blindness.

Causes of color blindness

First: congenital recessive inheritance, such as the father of color blindness can pass through the daughter to grandchildren. The main reason is that the cone cells on the retina lack three kinds of materials to sense color. If there is no red color sensitive substance, red blindness will occur; if there is no green color sensitive substance, green blindness will occur.

Second: various diseases of acquired eye, such as refractive stroma, retinal cells, optic nerve and visual center, can cause color blindness and achromatism, most of which are achromatism. To cure the color vision disorder, the premise is to cure the eye disease.

Third: with the development of research, some Japanese scholars have found that the color discrimination of calico workers is 200 times higher than that of normal people, so they think that the color weakness is also related to the lack of various color stimuli. A foreign scholar has done animal experiments, one group of animals were fed in the dark environment, the other group were fed in the bright environment with a variety of color light stimulation. When the animals grew up, it was found that the visual and color sensitivity of the group growing up in the dark was significantly weaker than that of the group growing up in the bright environment.

matters needing attention

Red blind can't see red, green blind can't see green, but both kinds of color blind can see yellow and blue, and also feel yellow and blue particularly bright. According to this characteristic, the chart book of color blindness and color weakness can diagnose color blindness or color weakness effectively in more than ten seconds.