900x563 | 640x400 | 120x75 | 75x75

omarsetty   Image Posted Feb.28th, 2023, viewed 178 times

Detects red-green color blindness

Red-green color blindness is the most common type of color blindness, a condition in which a person has limited ability to distinguish between specific colors. In the case of red-green color blindness, this means that it is difficult to distinguish between red, green and yellow tones.

Visual acuity is usually not affected. Color blindness is almost always inherited, in which case it cannot be treated, although there are ways to deal with it. A red-green color blindness test detects red-green color blindness.

The red-green color blindness test can let these people know they have this form of color blindness so they can take the necessary precautions to stay safe even then to stay when they are cannot distinguish some colors.

WHAT CAUSED COLOR BLIND?

The eye can recognize colors because there are cells called cone cells in the retina.

The average person has three types of cone cells, which can sense light of different wavelengths (including blue, green, and red, which are the three primary colors of light).

When light enters our eyes, these cone cells will produce different excitement according to the wavelength of the light, and then transmit the signal to our brain, allowing us to acquire the ability to recognize colors.

Therefore, the cause of color weakness/color blindness is that the function of one/several types of cone cells is affected, which makes the patient’s perception of color worse than ordinary people.

Because we have three types of cone cells, there are also grades for color weakness/color blindness: Monochromacy, Dichromacy, Trichromacy

About 99% of all color blind people are red green color blind. over 8% of men and 0.5% of men have from it.

Red-Green Color Blindness

Red-green color blindness, also called a red-green vision defect, is the most common type of color blindness, affecting about 1 in 12 males and 1 in 200 females among populations with northern European ancestry.

For people with this form of color blindness, reds and greens look similar to each other, appearing as a brownish, muted tone. There are four subtypes of red-green color blindness.

Deuteranopia

Deuteranopia is the most serious form of red-green color blindness.

It cannot perceive green. The patient cannot distinguish between light green and dark red, purple and cyan, magenta and gray, and treats green as gray or dark black.

In an art training class, a kid who painted very well always painted the sun green and tree crowns and grass brown.

It turned out that he was a green blind patient. Clinically, red blindness and green blindness are collectively referred to as red-green blindness, and patients are more common. The color blindness we usually refer to generally refers to red-green color blindness.

Deuteranomaly

Deuteranomaly weak green. Red and green are more common. They have poor sensitivity to red and green. When the lighting is poor, their color discrimination ability is close to red-green blindness; but when the material color is deep, bright and the illumination is good, its color discrimination ability is close normal.

Protanopia

Protanopia is also known as the No 1 color blindness. The patient mainly cannot distinguish red, and cannot distinguish red from dark green, purplish red, and purple. Green is often regarded as yellow, purple is regarded as blue, and yellow and blue are mixed into white.

There was a middle-aged man with a mature and serious attitude who bought a red woolen sweater and ridiculed it after putting it on.

It turned out that he was a protanopia patient who mistakenly made red for gray. There were reports in the early years that a protagonist who had become a train driver misread the signal and caused the train to collide.

Protanomaly

Protanomaly Red weakness, red looks greener and less bright.

HOW MANY GENERATIONS WILL BE INHERITED?

According to Mendelian law of inheritance, since the color blindness gene is a recessive gene, and the normal color width is a dominant gene, women with normal color vision may also have recessive colour blindness genes.

If the parents have normal color vision genes, the offspring will not have color blindness; but if the parents have normal color vision and the mother has a recessive color blindness gene, the offspring may have normal color vision or colour blindness.

Because the male sex chromosome is XY, there is only one X chromosome, so only one color blindness gene is required to perform excellent blindness; while the female sex chromosome is XX, so the pair of alleles that control color blindness must be recessive at the same time Only those who perform well are blind, so there are far more men than women in color blindness.

There is a rule for the inheritance of color blindness
1. Normal males and female carriers
2. Normal males and female colorblindness
3. Male color blindness, female normal
4. Male colorblindness, female colorblindness
5. Male colorblindness and female carriers

Color weakness and colour blindness are just the same genetic law, and the symptoms are different. Color weakness can distinguish single color and cannot distinguish three or more color weakness and multicolor points. Therefore, color weakness is divided into red, yellow, blue, green weakness, and full colour weakness.

Colour blindness is also difficult to distinguish between monochromatic colors. It is also divided into red, yellow, blue, deuteranopia and total color blindness. In total color blindness, the world is gray, and it is afraid of light to distinguish colors by brightness.

For better understanding read HOW DO ISHIHARA COLOR BLIND TEST WORKS.

Community Critique