How to identify red or green color blindness

1. False same-color diagram.

Commonly known as color blindness, it is the use of the same shade of hue but different color dots to form numbers or graphics, color vision impairment people have difficulty in identification, wrong or unable to read, can be in accordance with the color blindness table to confirm what kind of color vision abnormality.

2. Color harness test.

It is to mix different colors and shades of wool bundles, so that the subject can pick out the same color as the standard wire harness. This method is time-consuming, and can only be approximate qualitative, not quantitative, and is not suitable for large-scale screening examinations.

3. Color mixing tester.

It can quantitatively record the amount required for red-green light matching to determine red-green sensory anomalies, which can be both qualitative and quantitative.

The original green light was pure green, and the color blindness was indistinguishable. So now most of the green lights have blue added to it, and it's become blue-green, which is much better.

People used to think that people with color blindness couldn't tell the difference between red and green, and most of them could drive, so they were not allowed.

However, tests have been done and found that people with color blindness can generally identify it accurately. People with light color blindness can distinguish between a single and clear red and a green, they just can't distinguish between the complex and fine intermediate tones. So, despite the fact that many people with color blindness can't see clearly.

The complex pattern can be seen clearly in a single color.

Even patients with severe color blindness who are unable to distinguish a single color can still be identified according to the order in which they are arranged, because in general, the right light is green, and it is arranged vertically.

Below is the green light.

Upstairs is deceiving, in fact, the color blindness corrective lens is a color filter that can be installed in front of the camera, but the quality is worse than the color filter of the camera, ** and expensive, and the most important point is that what you see through it is not the original color. So wearing it to see the traffic light will only backfire.

Red-green color blindness is just a matter of difficulty distinguishing between red and green in certain situations, and it is a piece of cake to distinguish between traffic lights, although it can be difficult at long distances.

There is a red weakness. people in the retina of the eye.

Episensory red blood cells.

The red pigment contained in red sensitivity is somewhat abnormal and not sensitive enough to red light. People with weak green color have some abnormalities in the green pigment contained in the retina in the eyes, and are not sensitive enough to green light. These two colors are weak, and the ability to distinguish between red and green is relatively poor.

The degree of color weakness varies from light to severe. Severe red and green weakness, and red and green color blindness.

It's pretty much the same, and it's very difficult to distinguish between red and green. Mild red and green are weak, and can distinguish between red and green, but slightly difficult.

How to tell if you're color blind: Congenital color vision disorder, often called color blindness, is the inability to distinguish between colors or a certain color in the natural spectrum; The poor ability to distinguish colors is called color weakness, color weakness, although they can see the colors seen by normal people, but the ability to recognize colors is slow or very poor, when the light is dark, some are almost the same as color blindness, or color vision fatigue, it is generally not easy to strictly distinguish from color blindness. Color blindness and color deficiency are more common due to congenital factors.

There are far more male patients than female patients.

Go to the intersection and look at the traffic lights to confirm.

You can go to the hospital and do a test.

1. Red blindness: also known as the first color blindness. Patients are predominantly unable to distinguish red from dark green, blue from purplish-red, and purple. Green is often seen as yellow, purple as blue, and green and blue as white.

2. Yellow vision: Yellow vision refers to yellowing of vision, accompanied by day blindness (decreased visual acuity in the context of increased lighting), blurred vision, decreased color vision and paracentral scotoma.

3. Blue-yellow color blindness: Blue-yellow color blindness is also known as the third color blindness. Patients are confused with blue and yellow, and red and green are discernible and rare.

People with blue-yellow color blindness have difficulty distinguishing blue and yellow. Blue-yellow color blindness includes blue color blindness (tritanopia, third color blindness) and blue color deficiency (tritanomaly, third color deficiency). Blue-yellow color blindness is a type of color blindness.

4. Green blindness: Green color blindness, also known as second color blindness, patients cannot distinguish between pale green and dark red, purple and cyan blue, purple red and gray, and regard green as gray or dark black.

1.The red-green color blindness gene that determines the disease is recessive and is located on the X chromosome.

Male patients have a gene of XBY, while female patients have a genotype of XBXB and a female genotype of X (superscript) BXB.

Thus, if a male patient is married to a normal woman, the sons are normal, and the daughters are carriers.

If a female person with color blindness marries a normal male, the sons are all patients and the daughters are carriers.

If a female colorblind carrier marries a normal male, 1 2 sons will have a chance of developing the disease and 1 2 of the daughters will not have the disease, but 1 2 will be carriers.

If a female colorblind carrier marries a male colorblind person, 1 2 sons are likely to develop the disease, 1 2 daughters are likely to develop the disease, and 1 2 are carriers.

Red blindnessA most common type of partial color blindness, red and green blindness.

People with red-green color blindness cannot distinguish between red and green, and they see the entire spectrum as two basic hues: yellow on the long wave (red, orange, yellow, green) and blue on the short wave (cyan, blue, violet).

Kenig (believes that people with red-green color blindness lack pyramidal cells on the retina that sense red or green light.)

Fick (believes that the patient's retina has the same two pyramidal cells that normally perceive red and green light, but the information from these two cells is mixed together, so the brain cannot tell whether it is red or green.

2 Red-green color blindness is caused by the inability to distinguish between red and green, and is a congenital color vision disorder.

Causes of red-green color blindness The gene that controls red-green color blindness is located on the X chromosome and is a recessive gene, usually represented by XB, and the Y chromosome is too short to lack the homologous segment corresponding to the X chromosome and there is no gene to control color blindness.

Causes of red-green color blindnessIf a female homozygous with normal color vision marries a male with red-green color blindness, the son's color vision will be normal in their offspring; Although the daughter behaves normally, she is a carrier of the red-green color blindness gene because she received a red-green color loss gene from her father.

If a female carrier of the red-green color blindness gene marries a male with normal color vision, among their offspring, 1 2 sons are normal and 1 2 are red-green color blind; None of the daughters are colorblind, but 1 2 are carriers of the colorblind gene. In this case, the son's color blindness was inherited from the mother.

If a female carrier of the red-green color loss gene marries a male person with red-green color blindness, among their offspring, 1 2 sons are normal and 1 2 are red-green color blind; The daughter has 1 2 red-green color blindness and 1 2 is a carrier of the color blindness gene.

If a female with red-green color vision marries a male with normal color vision, among their offspring, the sons will all have red-green color blindness; Although the daughters are normal, they are carriers of the red-green color blindness gene because they received a red-green color loss gene from their mother.

Through the analysis of the above four marriage formulas, it can be seen that the male red-green color blindness gene can only be passed on from the mother, and can only be passed on to the daughter in the future, and this genetic characteristic is called cross-inheritance in genetics.

It is inherited with X chromosome recessive inheritance, which is more common in males than females, and has the characteristics of cross-inheritance and intergenerational inheritance. The father and son of a female patient must be the patient, the father is normal, and the daughter must be normal.

1.Congenital red-green color blindness or color deficiency is a sex-linked recessive disorder, and cone dystrophy is all autosomal recessive.

2.Acquired can be caused by macular disease, retina, optic nerve, and occipital cortex, or by drug toxicity.

The inability to distinguish between red and green colors is a congenital color vision disorder.

The gene that controls red-green color blindness is located on the X chromosome and is recessive, usually denoted by XB, and the Y chromosome is too short to lack the homologous segment corresponding to the X chromosome and there is no gene to control color blindness.

Red-green color blindness is inherited in a cross-inherited manner.