What's the difference between color blindness and color weakness?

It is difficult for color blindness to tell the difference between two specific colors. What is color blindness? It is a patient who can't recognize a certain color at all under natural light, but it may also be a variety of colors, such as red blindness and green blindness. Generally speaking, color blindness and color weakness are both inherited, both genetic diseases and genetic defects. Generally speaking, weak color will not cause trouble to daily life, and traffic lights can be clearly recognized, while color blindness is relatively uncomfortable in daily life. For example, I went out with a color-blind friend to buy flowers. I saw a big red flower, but he insisted that it was dark gray or black. Go shopping with him and show him two different colors of clothes. He may think it's a color. Later, I learned that he was red blind and I'm afraid he couldn't get a driver's license. This is a national regulation. People who are red, green and blind can't take a driver's license. After all, the simplest thing to face after you hit the road? Red light stops, green light goes? However, it is a kind of torture for them: isn't this a red light? Why did you leave? ? In order to reduce the occurrence of traffic accidents, this regulation has to be implemented for them.

For color-blind people, their lives are only light and dark, not as colorful as the rainbow we see in our eyes. And if they are in color blindness, vision problems will follow, but there are very few patients with color blindness. Most people will classify color blindness and color weakness as one category. In fact, there is still a big gap between the two. Color blindness refers to losing the ability to distinguish a certain color, and treating several colors in the eyes of normal people as one color, while weak color only has low ability to distinguish colors.

Is weak color low in color recognition ability? Science? From the perspective of color blindness, it must be remembered that it is impolite not to identify people with weak colors with papers or articles of various colors. People are not color-blind, they can generally recognize colors with high recognition, and it is no problem to see traffic lights. However, when you take out the color-blind weak color recognition map, so many colors are put together, people with weak colors are dazzled and even uncomfortable. The outline they see is different from that of normal people. I find it strange that light colors are discriminated against by many people now. Why do people working in the system ask for color discrimination?

Of course, some people who don't accept medicine or pharmacy can understand. After all, observing color changes requires experiments. But in some driving schools, if you fail to pass those recognition charts, you will be directly considered color blind. This operation is a bit excessive. People with weak colors can clearly recognize traffic lights and have no influence on driving. If you want to ask me what's different from normal people in my life, I can only tell you no, in normal life, who will put many small squares of various colors together?