# Is Reverse Color Blindness Test is Possible?

[Reading Time : 5 min | Date : 24, February 2023 | Author : Omar Setty ]

In the past we have introduced various tests for color blindness which may make people with this particular "disorder" feel left out.

Although only 7% of the male population is color blind, I thought it would be interesting to explore reverse color tests that the rest of us would have trouble solving.

On the G. Sarcone website I found exactly what I expected! In fact, most people who are color blind can easily read what is in the picture above.

That means if you fail the [color vision test](https://www.blindnesstest.com), you probably have all of the color sensitivity attributed to people with color blindness.

However, this test alone should not be considered sufficient to detect defective color perception.

see a model of what they could read while the rest of us couldn't: People with color vision problems typically have better night vision and are able to see changes in light in some situations than color-sighted people cannot.

It might also be worth noting how the US Army discovered that color blind people could see "camouflage colors" that fooled people with normal color vision!

## Let's see, How colorblind people Spot "camouflage colors"?

This guy Liu slowly starts to annoy me… After I have finally managed to see him in each of his previous stunts, he does it all over again, presenting us with whole new set of photos from his latest performances.

Not to mention he’s getting better with each blend! I guess we should be happy, but still…

Time to roll-up our sleeves one more time, and exercise our awareness again. His newest #art installation is currently exhibited in Eli Klein, popular New York art gallery, and is titled “Hiding in The City“.


**Each one chooses his or her path to come in contact with the external world. I chose to merge with the environment.” – Liu**


Liu was inspired to create his camouflage artworks after the Chinese government destroyed Beijing artist village Suo Jia Cun in 2005.

Where at the time, he had been working. The village housed Asia’s largest congregation of artists.

Prompted by the demolition of the site, Liu decided to use his art as a means of silent protest, blending in with the chosen backdrops, explaining his performances as silent comment on individual’s position in the society.

## Regular Color Blindness Test no.1
Now let’s see if you are able to find a circle, star, and/or square in this Demonstration Card below.

In reality, everyone should be able to see a circle, star, and square as this is a demonstration piece only.


## Regular Color Blindness Test no.2

Let’s see how the previous, “normal” tests worked like. Try and find a circle, star, and/or square in 3 seconds or less in this picture below.

While the colorblind individuals should only see the yellow square. Color normal individuals should see the yellow square and a “faint” brown circle.


### Schizophrenia Test Findings (“Normal” tests)

A few years ago, researchers from the London University discovered that schizophrenics are not that easily fooled by visual illusions.

Although their illness may make it difficult for them to distinguish fact from fiction. This schizophrenia test study showed that they can see right through some optical illusions.

Hence, the interesting finding is that it helps bolster one interpretation of this mental illness – it may be due to a general inability to interpret sensory information in its proper context.

We often think of people with schizophrenia as not seeing the world the way it really is. For example, during hallucinations – but we have shown that sometimes their vision can be more accurate than non-sufferers. – Dr. Steven Dakin, UCL Institute of Ophthalmology

### How The Schizophrenia Test Was Conducted?


Volunteers were shown high-contrast black and white patterned images, with some sections contrasted at lower levels.

Next, they have to match the contrast of the altered section to it’s double in a line up of other identical shapes.

Schizophrenics find this task relatively easy because their brain does not take notice of surrounding information when judging the level of contrast in the altered section.

For healthy individuals, a high-contrast background reduces the apparent contrast of smaller foreground features.

These results will startle you: 12 of the 15 schizophrenic volunteers were the most accurate in perceiving the contrast between the background and foreground.

The authors hope their study might have some diagnostic value. Existing criteria for schizophrenia diagnosis tend to be subjective and is based on interviews. This study might be a good step towards more objective diagnostics one day.

### The Explanation

To the average eyes, the background makes the central disk appear slightly grayer than it actually is.

The researchers then assessed the subjects’ perception, showing them a series of disks of increasing grayness.

Observers had to guess whether the patch was lighter or darker in contrast than the original image.


Dr. Steven Dakin, explained: “Normally, contextual processes in the brain help us to focus on what’s relevant.

It can stop our brains being overwhelmed with information. This process seems to be less effective in the schizophrenic brain.

Possibly due to insufficient inhibition – that is, the process by which cells in the brain switch each other off.”

Therefore, the theory to why many schizophrenics misinterpret people’s actions and can feel persecuted is context.

If you liked this article, you may also like this one explaining why children and adults size up objects differently.

## Regular Color Blindness Test no.3

The question is same -are you able to find a circle, star, and/or square in 3 seconds or less in this picture below?

Just the opposite from previous test, colorblind individuals should now see the yellow circle, while color normal individuals should see the yellow circle and a “faint” brown square.


## Schizophrenia Test

A few years ago, researchers from the London University discovered that [schizophrenics](https://wikipedia.org/wiki/Schizophrenia) are not that easily fooled by visual illusions.

Although their illness may make it difficult for them to distinguish fact from fiction.This schizophrenia test study showed that they can see right through some optical illusions.

Hence, the interesting finding is that it helps bolster one interpretation of this mental illness – it may be due to a general inability to interpret sensory information in its proper context.

## How Does a Reverse Color Blind Test Work?

Color blindness is a relatively easy condition to test for. At-home tests can provide a fairly accurate screening for the presence of color vision deficiency or not.

A reverse color blind test includes images and colors that only someone who is colorblind is likely to see. Someone with normal color vision would likely fail a reverse color blind test.

Reverse color blind tests are effective screening measures for color blindness, but they are not meant to provide definitive diagnostic answers.

After completing a screening at home or school, you may have additional questions about the presence of color deficiency in yourself or your child. Following up with an ophthalmologist can give you clear results.

Currently, there are no treatment options for color blindness. However, there are effective accommodations, such as special glasses, contact lenses, visual aids, and technology that greatly reduce the impact of color blindness.

## Testing for Color Blindness

About 1 in 12 males and 1 in 200 women worldwide is color blind. Their color blindness, or color deficiency, is typically inherited and present at birth. People who are color blind are unable to tell the difference between certain colors.

Color blindness occurs when color-sensitive pigment in the cone cells of the retina is missing. This deficiency typically causes people to have trouble seeing red, green, blue, or a combination of these colors.

People who are red-green color blind, for example, are not able to tell the difference between the two colors; they appear the same.

The standard test for color blindness is the Ishihara Color Test. An image of a circle of various colors is presented, and the person must assess if they can see a number in opposite colors inside the circle. If they cannot see the number, they may be color blind.

## Examples of Ishihara Color Tests

### What Is a Reverse Color Blind Test?

A reverse color blind test is a version of the Ishihara color test that is typically easily solved by someone who is color blind.

Someone with normal vision would have difficulty seeing the number in the center of the image. If you fail a reverse color blind test, you most likely have normal, full-color vision.

The colors on a reverse color blind test are more perceptible by people who are color blind. An image is hidden within a picture that only someone who is color blind could pick up. These are examples of reverse color blind tests:

People with color vision deficiencies are better able to perceive variations in luminosity as well as better able to see at night.

Additionally, color blind people are often able to identify camouflage colors better than people with normal color vision.

### Are Reverse Color Blind Tests Effective?

Reverse color blind tests are effective screenings for color blindness, but they are not sufficient on their own to determine whether someone is color blind or not.

If you can see the image on a reverse color blind test, it is likely you have some degree of color blindness.

After you complete a color blind or reverse color blind test at home, you may decide to follow up with your eye doctor if you have concerns about your color vision.

The initial screenings, which are widely available online, can help to detect the existence of a problem.

Following up with more formal, detailed tests with an eye doctor will help determine the type and severity of color blindness you are dealing with.

## Getting Tested for Color Blindness

The American Academy of Ophthalmology (AAO) explains that there are varying degrees of color blindness.

Some people have mild color blindness where they only experience difficulty distinguishing colors in poor light.

Other people are unable to distinguish certain colors no matter what the lighting is like.

If you are concerned that you or your child may have some form of color blindness, start by taking an Ishihara color test at home.

It is a simple test that will give you dependable results right away. Color blindness is a rare and nonthreatening condition. Many people who are red-green color blind don’t even realize it.

If you are experiencing vision problems or sudden changes to your color vision, a checkup with an ophthalmologist is a good idea.

While color blindness has limited impact on most people’s lives, sudden worsening of symptoms could indicate a more serious problem.

## Treatment for Color Blindness

People experience color blindness on different levels, and very few people experience total color blindness where they can only see shades of grey.

Most people who are color blind are able to adapt and the condition has little impact on their daily lives, explains [the National Eye Institute (NEI)](https://www.nei.nih.gov/).

Color vision tests are used to diagnose color blindness and then various accommodations can be used to improve perception of color, though the condition never goes away.

*NEI recommends the following treatment options:*

1. **Glasses and contact lenses:** Special glasses and contact lenses can be worn by people who are color blind in order to help them distinguish between colors more clearly.
3. **Visual aids:** Certain visual aids, such as labels or charts around the home, work, or classroom, can help people with color blindness learn the colors of things they frequently look at.
4. **Technology:** Apps are available to help people with color blindness identify colors of objects or spaces by taking pictures on their phones or tablets and then tapping on areas of a picture to gain information about the colors that are present.

For the most part, people are born with color deficiencies and those deficiencies remain consistent throughout their lives.

People with color blindness can still see colors, just in different ways than the general population. For people with color blindness looking for better clarity in their color vision, accommodations are available.