How To Pass Colour Blindness Test

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. Ishihara improved the test. It was called a must-have tool for color blind tests. This happened at the 13th International Ophthalmological Society Conference in 1929.


1.The most common types of color blindness are red-green and blue-yellow. Certain apps and devices help people with color vision deficiencies. They help them pass color blindness tests. Yet, total color blindness, although rare, can lead to a complete failure in passing these tests

color blind percentage in the world,most are red green colorblind ,over 99.45%

2.There are four types of red-green color blindness. If you suffer from any one of these, you may not be able to pass the color blindness test without utilizing specific strategies or devices.

percentage of red green colorblind types


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. In poor lighting, they are nearly red-green blind. But, in good light and with deep, bright material, their color vision is close to normal.


Protanopia is also known as the No 1 colour 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 colour blind. over 8% of men and 0.5% of men have from it.


1.By using the ishihara color blind test plate.normal people.and colorblind people see the different they got the wrong answer.

Test your eye is or not have color blindness

ishihara color blind test plate number 1

Average Person: Cow

Red Green Color Blindness: Deer

Average Person:  26

Red Color Blindness: 6

Green Color Blindness: 2

ishihara color blind test plate number 3

Average Person: 6

Red Green Color Blindness: 5

Full Color Weakness: NO  ANY

Average Person: Purple Line and Red Line

Red Color Blindness: Purple Line

Green Color Blindness: Red Line

ishihara color blind test plate number 5

Average Person: No ANY

Red Green Color Weakness: Curve Line

ishihara color blind test plate number 6

Average Person: 424

Red Color Blindness: 2

Green Color Blindness: 44

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. Scientists at the University of Houston in the United States did the experiments. They found that, with strong light for a long time, the optic nerve of human eyes gets tired. Then, they easily fail 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) treats tuberculosis. But, it may cause optic nerve problems and trouble seeing some colors.

4. Chemical exposures will let you not pass the test.

Exposure to organic solvents, like styrene, carbon disulfide, perchloroethylene, and n-hexane, and to solvent mixtures, and to organic and inorganic mercury, can greatly harm color vision. This harm comes from long-term exposure.

For some of these compounds, we found a clear dose-response relationship. We also found other effects on color vision, such as hours of exposure to toluene or acute alcohol ingestion. These effects appear to affect color perception.


If you’re color blind and have to take an exam, you might be worried that it will be difficult or impossible for you to pass. You may have heard that people with normal vision have many ways to cheat on tests. You may have wondered if there are any ways for a color blind person to cheat on their own test. Well, the truth is that there are several strategies that can help you pass even if you’re color blind!

Wearing colorblind contacts is your ultimate solution to pass the test.

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You can blur your vision or look through a cellophane film to see the numbers.

  • Blur your vision by rubbing your eyes. This can be done by closing one eye, then the other, and then blinking rapidly. The idea is to blur the letters on the test so they look like they’re moving around. When you press your fingers against a wall or something else solid, it will help you focus on one part of the test. This is instead of taking in everything at once and seeing nothing.

  • Look through a cellophane film to see the numbers on the test. This involves placing cellophane on each box before filling it with ink or pencil marks. Once you’ve finished, remove them from under your glass or mirror until it’s someone else’s turn! Cellophane film comes in rolls that cost about $2 each. If needed, buy several colors. We want to know what colors our friend can’t see.

You can magnify the screen with your phone camera and then use the screen as a viewfinder

You can magnify the screen with your phone camera and then use the screen as a viewfinder (so you’re not actually looking at the picture). This method does require some training, but it is possible.

Isolate the numbers. You can do this by zooming in/brightening them on your phone or using other optical tricks.

If you’re taking the test on a computer, zoom in and brighten the screen. If you’re taking the test on paper, use a magnifying glass to enlarge and lighten the number. If you don’t have one handy, try making one out of folded paper or a lens from an old pair of glasses.

If you want to cheat at home (or in front of your friends), you can also take pictures of each number using your phone camera app or any other camera. The more zoomed-in images will show more detail. They will help when distinguishing between different colored numbers like 0 versus 9 or 4 versus 5. So, if this is a particularly hard part for you, it might be worth trying!

Use a friend or family member who is not colour blind to tell you the numbers.

  • Use a friend or family member who is not color blind to tell you the numbers.

  • Ask them to help identify the colours.

  • Try practicing with them before the 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 colour 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,colour blind can not apply for majors in most country

Mild color vision abnormalities (commonly known as color weakness) can not be engaged in professional

Chemical, pharmaceutical, and biological science majors use color wavelengths as strict standards. Public security technology, geology, and medical majors also do. Bioengineering, biomedical engineering, and animal medicine do too. So do animal science, wildlife and nature management, psychology, and ecology. Scouting, special energy engineering, and pyrotechnics do as well. The same goes for archaeology, marine science, and marine technology. Marine engineering, food science, and light chemical engineering do too. Forestry chemical industry, agronomy, and horticulture do. Plant protection, tea science, forestry, and gardening do too. Silkworm science, agricultural resources, and environment do as well. Aquaculture, marine fishery technology, and material chemistry do. Environmental engineering, polymer materials, and process equipment engineering do too. Control engineering, pre-school education, special education, and physical education do as well. Sports training, sports science, and traditional sports do too.

Specialties that color vision disorder (commonly known as color blindness) cannot be engaged in

It also includes painting, design, photography, animation, and museology. It also includes physics, astronomy, geography, and meteorology. It includes material physics, mining engineering, and resource exploration engineering. It also includes metallurgy and non-metallic material engineering. It includes transportation, and oil and gas engineering. The specialist major is the same as or similar to the above major.


Remember, cheating on a test is not the best idea. If you’re going to cheat, do it in your own way and don’t be afraid to experiment with different solutions.





Color blindness can be treated with various types of glasses, contact lenses or surgery.

In many cases, color vision deficiency may not be severe enough to warrant any treatment. If you are concerned about your color vision deficiency, talk to your eye doctor. They can test your ability to see different colors and hues.

1.For people with normal vision, be careful not to over-stimulate and fatigue your eyes for a long time.

Limit phone use. Control TV, game, and club drinking time. Also, limit loud sounds and lights. These limits can cause extreme eye fatigue.

For people who are color blind, wearing color-blind glasses can solve many color distinction problems. These problems are caused by color-blindness.

We offers you world-class customer service and great attention to detail. We deliver fast and we make sure all our clients are happy. Our online store was built for easy use and to help you find the perfect pair of color-blind glasses for you.

You Might Also Like The Following Articles:

What Does Color Blind Lantern Test Tells You About Your Vision

Can You Be Color Blind In One Eye

Relevant Products For Colorblind:

Best Colorblind Contacts For Red Green Colorblind

Best Indoor Color Blind Glasses 

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