WHAT ARE COLOR BLIND TEST
The color blindness test is a test to differentiate between color blindness and to determine the type of color blindness. Generally, it includes color naming test, matching test, confusion test and laboratory test. The color naming test is the simplest. The test requires the examinee to name the color.
Sterling designed the color blind test in 1889 and Ishihara’s improved color blindness test which was determined as must have tool for color blind test at the 13th International Ophthalmological Society Conference in 1929.
WHY DO I FAIL IN COLOR BLIND TEST
1.There are 4 types of color blind,if you are have one of them,you’ll not pass the test.
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.
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 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.
Protanomaly Red weakness, red looks greener and less bright.
About 99% of all color blind people are red green color blind. over 8% of men and 0.5% of men have from it.
WHAT DOES A COLORBLIND PERSON SEE?
1.By using the ishihara color blind test plate.normal people.and colorblind people see the different result.so they got the wrong answer.
Test your eye is or not have color blindness
2.Do not participate in strenuous activities before the test, which can easily fatigue your eyes.
This also makes it impossible to pick the correct answer in the colorblindness test. According to the experiments of scientists at the University of Houston in the United States, under the stimulation of strong light for a long time, the optic nerve of human glasses will be fatigued, and it is easy to fail to pass the color blindness test.
So generally do not using eyes for a long time before the test, such as playing tv game all night, mobile phone, etc.
Especially in the nightclub, the light is very dazzling. In this environment for a long time, the stimulation to the glasses will be very strong.
3.Certain drugs can cause changes in color vision. These include the antipsychotic medications chlorpromazine and thioridazine.
The antibiotic ethambutol (Myambutol), which treats tuberculosis, may cause optic nerve problems and difficulty seeing some colors.
4. Chemical exposures will let you not pass the test.
Long-term exposure to organic solvents such as styrene, carbon disulfide, perchloroethylene, n-hexane, and solvent mixtures, as well as organic and inorganic mercury, can have significant effects on color perception. For some of these compounds, by finding a clear dose-response relationship, Further identified effects on color vision, such as hours of exposure to toluene or acute alcohol ingestion, appear to affect color perception.
PEOPLE WHO NEED PASS COLOR BLIND TEST
Color blindness brings a lot of inconvenience to our work and life, so in daily affairs and work that require color distinction, we must take the impact of color blindness seriously.
People who works on below career should pass the color blind test
The color and reaction of reagents and solvents must be correctly identified in chemical experiments and chemical production;
In the textile, printing and dyeing industry, color selection must be carried out;
Metallurgy and foundry industry. The temperature of the molten metal needs to be judged by its color;
Color-blind people are wrong in color discrimination and should not be engaged in these occupations.
Aircraft, ships, trains, car drivers and traffic managers. Various color signals must be distinguished correctly. If a wrong judgment is made, it may lead to serious accidents.
If you are students,colorblind can not apply for majors in most country
Mild color vision abnormalities (commonly known as color weakness) can not be engaged in professional
Chemical, chemical and pharmaceutical, pharmacy, biological science, public security technology, geology, and medical majors that take color wavelengths as strict technical standards; bioengineering, biomedical engineering, animal medicine, animal science , Wildlife and Nature Reserve Management, Psychology, Applied Psychology, Ecology, Scouting, Special Energy Engineering and Pyrotechnics, Archaeology, Marine Science, Marine Technology, Marine Engineering, Food Science and Engineering, Light Chemical Engineering, Forestry chemical industry, agronomy, horticulture, plant protection, tea science, forestry, gardening, silkworm science, agricultural resources and environment, aquaculture, marine fishery science and technology, material chemistry, environmental engineering, polymer materials and engineering, process equipment and Control engineering, pre-school education, special education, physical education, sports training, sports human science, and national traditional sports.
Specialties that color vision disorder (commonly known as color blindness) cannot be engaged in
In addition to mild color vision abnormalities, it also includes fine arts, painting, art design, photography, animation, museology, applied physics, astronomy, geographic science, applied meteorology, material physics, mineral processing engineering, resource exploration engineering, metallurgy Engineering, inorganic non-metallic material engineering, transportation, oil and gas storage and transportation engineering and other majors. The specialist major is the same as or similar to the above major.
HOW CAN I IMPROVE MY COLOR VISION?
COLORBLINDNESS IS INCURABLE BUT CAN BE CORRECTED
1.For people with normal vision, be careful not to over-stimulate and fatigue your eyes for a long time.
Limiting the use of mobile phones, controlling the time of watching TV, playing games, the stimulation of alcohol in nightclubs and the stimulation of sound and light can cause extreme your eyes fatigue.
2.For people who have color blind.wearing color-blind glasses can solve various color distinction problems caused by color-blindness in life
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