What is color blindness

summary

Color blindness is usually caused by congenital factors, for some colors can not be correctly distinguished, men are more prone to color blindness. I still remember that when I was in junior high school, my physical examination teacher would show us a color book. If we can't distinguish colors, it's color blindness. Let's share with you the common problem of what color blindness is!

What is color blindness

First of all: congenital color vision disorder is usually called color blindness, it can not distinguish a variety of colors in the natural spectrum or a certain color; and the poor ability to distinguish color is called weak color, weak color, although can see the color seen by normal people, but the ability to identify color is slow or very poor, when the light is dark, some almost and color blindness, or performance for color fatigue, it is similar to The boundary of color blindness is not easy to distinguish strictly. The most common color blindness and color weakness are congenital factors. Male patients are far more than female patients.

Secondly, color blindness is divided into total color blindness and partial color blindness (red blindness, green blindness, blue and yellow blindness, etc.). Color weakness includes full color weakness and partial color weakness (red, green, blue, yellow, etc.).

Finally: the examination of color blindness and color weakness mostly adopts subjective examination, which is usually carried out in bright natural light.

matters needing attention

Color blindness can also be improved through correct acupoint massage. Press the eye 2 cm below the center of the eye with your fingers for about 6 seconds. This method can relieve other vision problems, such as hyperopia and myopia.