Some people are born to be royal nobles, and some are born to be impoverished. It’s hard to even speak, so it’s better to live well than to live well, but it’s nothing. There are hands and feet. Since I live in a poor environment, I will work hard on my own in the next life! Actually this It's okay, some are born with lack of hands and feet, and some are born with severe illnesses. For them, it is still quite pitiful, but they are still working hard for the next tomorrow, and some people are naturally sensitive to colors because of vision problems, and they are indistinguishable from their duties. They are crossing the road. When I couldn’t see the red and green lights, it caused many tragedies.
Color blindness is mainly divided into red-green blindness and blue-yellow blindness. Blue-yellow blindness is extremely rare. Most of red-green color blindness is caused by genetic defects, called congenital red-green color blindness, and a small part of it is acquired due to diseases of the optic nerve. It is estimated that 1 in 12 men in the world (8%) and 1 in 200 women (0.5%). People with red-green color blindness cannot tell the difference between red and green, and some types are confused. Certain shades of blue and yellow, that is, red-green blindness, can be mild, moderate or severe.
How does color blindness happen?
The retina in the eye is a light-sensitive layer at the back of the eyeball. It has two unit shapes: rod-shaped and cone-shaped. They both respond to color and generate signals that reach through the optic nerve The brain is grouped together to form all colors. For people with color blindness,
means that there is a problem with at least one cone. These cones may be missing, or the picked colors may be different. Either way, it cannot send correct information to the brain. Because the cone can also help to see the fine details of what you are looking at, color blindness may also reduce your sharpness.
4. How is color blindness inherited?
Because the inheritance mode of red-green color blindness is X recessive inheritance (the disease-causing gene is located on sex chromosome X), it is more common in men, and mothers are more often carriers.
If the mother is a carrier, the father is normal. If the boy is born, the probability of red-green color blindness in boys is 50%, and 50% of girls born are carriers.
So genetic diseases are a pain in human fertility. At present, there are many genetic diseases that still make people helpless once they occur. After the birth of Russia, the experts of the reproductive hospital also made various efforts to earn through a technology to kill this genetic disease when it was only an embryo. If one of the spouses or both families have genetic diseases, they must use The third-generation IVF technology assists in pregnancy to complete the birth plan, preventing genetic diseases from affecting the fetus from the root cause.
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