What are the symptoms of color blindness? What is the effect of color blindness?

Color blindness is a very common disease in daily life. Many people have symptoms of color blindness, but it is difficult for color-blind patients to find out that they are color blind. Therefore, it is recommended that you have a physical examination once a year to avoid physical problems unconsciously. Color blindness has a great influence on people's lives, especially in traffic. It's dangerous not to know the traffic lights.

1. What are the symptoms of color blindness?

1, blue-yellow blind

Also known as third color blindness. Patients can't tell blue from yellow, but can distinguish red from green, which is rare.

2. The overall color is light.

Also known as red, green, blue and yellow. The degree of color vision disorder is lower than that of color blindness, and there is no abnormality in vision and other complications of color blindness. When the color of the object is dark and bright, it can be distinguished; If the color is light and unsaturated, it is difficult to distinguish. There are also very few patients.

3. Some colors are very light.

There are light red (first light color), light green (second light color) and light blue yellow (third light color), among which light red and light green are more common. The patient's sensitivity to red and green is poor, and his color discrimination ability is close to red-green color blindness under poor illumination. However, when the color of the substance is dark and bright and the illumination is good, its color discrimination ability is close to normal.

4. achromatopsia

It belongs to complete cone cell dysfunction, which is just the opposite of night blindness (rod cell dysfunction). Patients especially like darkness and photophobia, showing day blindness. The colorful world is gloomy in its eyes, just like watching black and white TV, only light and shade, no color difference. Moreover, red is dark and blue is bright. In addition, there are symptoms such as poor eyesight, amblyopia, central scotoma and oscillatory nystagmus. It is one of the most serious color vision disorders, which is rare for patients.

5. Red blindness

Also known as first color blindness. The patient can't tell red from dark green, blue from purple and purple. Green is often considered yellow, purple is considered blue, and green and blue are mixed into white. Once, a self-serious, middle-aged man bought a gray sweater and put it on, which attracted ridicule. It turned out that he was blind in red and turned red into gray by mistake. Earlier, it was reported that a red-blind patient became a train driver, and the train collided because he misread the signal.

6. Green blindness

Also known as second color blindness, patients can't tell light green from deep red, purple from cyan, purple from gray, and regard green as gray or dark black. In an art training class, a child painted very well. He always paints the sun green and the crown and grass brown. It turns out that he is green blind. Clinically, red blindness and green blindness are collectively referred to as red-green color blindness, and patients are more common. We usually refer to color blindness as red and green color blindness.

So color blindness is not harmful to patients' health? However, as a color-blind patient, I think we still want to know something about our disease. After all, color blindness has brought a lot of inconvenience to our lives. If you don't know much about color blindness, some jokes may appear.

2. What is the effect of color blindness?

1, inferiority complex

The harm of color blindness is to give people a sense of inferiority. The key to treating color blindness is to reduce the stimulation of color blindness to children. Therefore, schools should not check color blindness in public. It's best to do it individually, and it's best not to let the students around you know which one is color blindness, so as not to make children feel inferior.

2. Occupational restrictions and obstacles

Experts pointed out that because red-green color blindness patients can't tell red from green, they are not suitable for color-sensitive jobs, such as art, textile, printing and dyeing, chemical industry and so on. For drivers, there should be no red and green color blindness and color weakness. Because people who are red, green and blind can't correctly identify the colors of traffic command signals, traffic signs and traffic lights (braking and steering) in front of them.