2023 Complete Guide: Navigating Life with Red-Green Color Blindness

see through color blind glasses

Red-Green color blindness, encompassing all its subtypes, is the most prevalent form of color blindness, accounting for about 99% of all color vision deficiencies. It occurs when the red and green receptors in the retina are not working correctly. The result is that reds and greens appear similar, resulting in a loss of detail.

Donut data graph display red green colorblind is the most type of colorblind

Here is a complete guide on Red Green Colorblindness that will help you understand this condition better.

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What Does Red Green Colorblind Means

Red-green color blindness is a condition that restricts an individual’s ability to differentiate between red and green hues. There are four primary variants of this condition: Deuteranomaly, Deuteranopia, Protanomaly, and Protanopia.

This condition, often attributed to specific genes, impedes the brain’s ability to perceive variances between red and green. Consequently, individuals with this form of color blindness typically struggle to discriminate between these two colors and may even confuse other colors as either red or green.

Numerous daily tasks can prove challenging for those with red-green colorblindness. The differentiation of traffic signals, for instance, may be troublesome, with colorblind individuals perceiving fire engines as black instead of red, or failing to discern between green and yellow traffic lights.

Other tasks such as map reading, money identification, or recognizing blood in medical situations might also present difficulties.

Additionally, red-green colorblind people may struggle to distinguish between additional colors such as purple and blue, or yellow and green. This condition could also make it difficult for them to identify color differences in fruits and vegetables, confusing red apples for green spinach, for instance.

What  Are Types Of Red  Green Colorblindness?

There are four types of red-green colorblindness:

Donut data graph display percentage of  4 types  red green colorblind,Deuteranomaly are the most of red-green colorblind

Deuteranomaly (weak green)

Deuteranomaly – People with this condition are less sensitive to green light than normal, but their ability to see red is usually unaffected.

About 6% of men and 0.4% of women have deuteranopia in the United States.

The word “deuteranomaly” comes from the Greek words deutero, meaning second or double, and anomalia, meaning anomaly or abnormality. The name means that this form of color vision deficiency is caused by an abnormality in one of the cones in the retina that are sensitive to green light but not red light.

Deuteranopia (green absence)

Deuteranopia is characterized by a lack of green cones, which are sensitive to wavelengths around 564 nm and 544 nm (green).

As a result, people with deuteranopia can only see shades of red and yellow. The absence of green hues makes it harder for them to distinguish between shades of red, orange, brown and yellow. Their blue and purple appear more similar than they do to people with normal vision.

More than 5% of the male population and less than 1% of the female population.

Protanomaly (weak red)

Protanomaly– People with protanomaly have difficulty seeing shades of red that are different from yellowish tones or browns, especially at night or in low light conditions.The word “protanomaly” means much the same thing but with respect to red light instead of green light.

It is caused by a mutation in either the L or M opsin gene on chromosome 7 that codes for one of two photopigments used to perceive short-wavelength light (blues).

About 1% of men and 0.02% of women have this condition.

Protanopia (red absence)

Protanopia is a complete loss of sensitivity to red light. People with this condition cannot tell the difference between colors like red and brown, pink and orange, or maroon and purple. The word “protanopia” comes from the Greek words “proto-” (before) and “-anoia” (seeing).

About 1% of men and 0.03% of women have this condition.

Signs And Symptoms

The term “red-green color blindness” is somewhat misleading because the problem isn’t with red, green, or blue but rather with how your brain perceives them. Red-green color blindness affects the ability to distinguish between red, orange, and yellow hues on one side, and between greenish-yellow, yellow-greens, and bluish greens on the other.

What Do Red Green Color Blind People See

You have difficulty distinguishing between red and green traffic lights;

You confuse similar shades of green when shopping for fruit;

You often mistake a Christmas tree ornament for a piece of broccoli;

You think that all brown objects look black.

common  vs colorblind see the cake
Normal VS Red-green colorblind

Why Do People Have?

Red-green colorblindness is a genetic condition that affects your ability to see certain colors. In some cases, people with red-green colorblindness can only tell the difference between green and brown; others can’t tell the difference between reds and oranges or yellows and greens.

The reason why people have red green colorblindness is that the cells in their eyes that are supposed to detect red light aren’t working properly. This means that they don’t see reds, as well as people with normal vision, do — they either don’t see them at all or they see them as something else, such as oranges or browns.

Colorblindness can affect one eye or both eyes (called dichromacy), depending on which cones aren’t working properly.

Red-Green Color Vision Deficiency – More Common Than You Know

 Red-green colorblindness is the most common form of colorblindness in men, affecting 7 percent of all men. It’s rare in women, though, affecting only 0.4 percent of all women.

The number of people who are colorblind is estimated to be around 1 in 12 men and 1 in 200 women. However, there are no reliable figures on how many people are affected by red-green color blindness.

Top10 population of Red Green Colorblind People  in Countries

  1. China:107 million
  2. India: 74 million
  3. United State:32 million
  4. Indonesia:29 million
  5. Pakistan: 28 million
  6. Brazil: 25 million
  7. Nigeria: 20 million
  8. Bangladesh: 19 million
  9. Russia:14 million
  10. Mexico: 12 million

Genetic Factors: Is Color Blindness Hereditary?

Red Green Color Blindness Is An X Linked Recessive Disorder

Red-green colorblindness is due to an abnormal gene on the X chromosome. Men have one X chromosome and one Y chromosome while women have two X chromosomes. This means that if a man inherits two defective copies of the gene, then he will be colorblind, whereas a woman will only inherit one defective copy and her other copy may compensate for it. If both men and women are color blind, they will be equally affected.

It is inherited and can be passed down from either parent.

If both parents have red-green colorblindness, there’s a 25 percent chance their child will be affected. If only one parent has red-green colorblindness, there’s a 50 percent chance their child will be affected. But if neither parent has red-green colorblindness, there’s no risk that their child will have it.

Color blindness can also be caused by trauma or injury to the eye, optic nerve or brain as well as to age-related macular degeneration Age-related macular degeneration(AMD).

 AMD affects central vision and causes loss of pigmentation in the macula area at the back of your eye’s retina where light-sensing cells (photoreceptors) are located.

How To Diagnose?

There are several tests that doctors use to test red green color blindness. Some are simple while others require more complicated equipment like an eye exam with a special machine called an anomaloscope, which measures how well a person can distinguish between two similar colors.

The Ishihara Test

The Ishihara color vision test is a common test used to identify red-green color blindness. It uses a series of circles containing numbers that are printed in different colors. The patient is asked to identify the numbers.

The following image shows an example of the test:

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

The Anomaloscope


The Anomaloscope is a device that uses light and a filter to separate colors, allowing you to determine which wavelengths are being absorbed by your eye. A color-blind individual will absorb more light than they can perceive, while a person with normal vision will absorb less. The Anomaloscope will help you determine whether or not you have red/green color blindness by determining how much light your eyes are absorbing.

Oculus HMC Anomaloscope Test

The test consists of two different lights: one red, and one green (although some models use white light instead and may mix in other colors). You’ll look through the eyepiece at these lights while wearing filters over each eye—one that lets in only red wavelengths and one that lets in only green. If the overlapping circles appear black or gray when viewed with both filters on at once, but become distinctively colored when viewed by themselves with only one filter at a time; then this indicates that your retina has some type of deficiency affecting the perception of either reds or greens (or both).

Color Matching

If you have a color blindness test, it’s likely that the test will use a special color matching chart. This is the most accurate way to test for red-green colorblindness because it requires you to make an exact match between the colors on your computer screen and the colors on a specially printed chart of squares with different shades of red, green, yellow, and blue.

There are two main types of color matching tests: one uses colored tiles; the other uses colored dots with patterns printed underneath them. To do this type of test, you need to put each tile or dot into its correct place on either side of a dividing line (or in some cases over another pattern). You should then use this information about where each square fits together to determine what shade each square should be called by its number or letter code (e.g., “square 2A”).

Can Red Green Colorblind Be Cured?

There is no cure for Red Green Colorblindness. If you are colorblind, you have a deficit in the cone cells of your retina, which are responsible for color vision. These cells are unable to perceive certain wavelengths of light as they should and therefore can’t transmit information to the brain as they should. This is why people with red-green colorblindness often confuse green and brown or blue and gray.

The only way to cure red-green colorblindness is to replace damaged cone cells with healthy ones. However, there hasn’t been much research into this field because of ethical concerns surrounding stem cell research.

Life Through the Lens: Real Experience of Color Blindness

There are treatments for red green colorblindness that can help people with this condition correct colors more clearly. They include glasses, contact lenses.

Colorblind  Glasses

red green color blind TPG-038

If you are colorblind, Color blind glasses might be the most effective treatment for red green colorblindness. Colorblind glasses have a filter that is designed to enhance the colors that are seen by the colorblind person. This can improve the ability of a person with red green color blindness to identify colors, which can help them perform everyday tasks more easily.

Colorblind glasses are not for everyone, as they are quite expensive and not always covered by insurance plans or government programs such as Medicare or Medicaid. However, if you have some money to spend on yourself or someone else who wants better vision but does not want surgery or laser treatment then these may be appropriate options for you!

Colored Contact Lenses For Red Green Colorblind

red green colorblind contacts package pic

Colored contact lenses are a surgical option for people with red green color blindness. They work by filtering out the wavelengths that you can’t see, allowing you to see those colors correctly.

How does it work? Colored contact lenses come in a range of shades and are designed to filter out certain wavelengths of light that your eye would otherwise not be able to detect, thus allowing you to see more clearly. For example, if you have red-green color blindness then wearing blue-tinted contacts could help filter out the red or green wavelengths in front of your eyes and make them easier for you to distinguish between them. This means that colours appear brighter, more vibrant and less washed out.

There is no definitive scientific evidence as yet but some studies suggest wearing coloured contacts may also improve contrast sensitivity in people who wear glasses or have low vision conditions such as macular degeneration (AMD). In addition, some patients report an improvement in visual acuity after wearing coloured contacts for several months while others do not notice any difference at all!

Color Blind Glasses Help You Pass Ishihara Test

What Are Glasses For Color Blindness Red-green?

Red Green Color Blind Corrective Glasses are corrective lenses that help people with red-green color blindness see the difference between different shades of red and green. These glasses are made specifically for people who have difficulty distinguishing between these two colors. They contain special lenses that filter out certain wavelengths of light so that they can be seen more clearly.

How do Red Green Color Blind Glasses Work?

Red Green Color Blind Glasses work by filtering out specific wavelengths of light so that they can be seen more clearly by someone who suffers from red-green color blindness. The glasses either filter out all wavelengths except for those visible to people with normal vision or filter out specific wavelengths in order to help people with a particular type of color deficiency (for example, protanopia).

Color blind glasses, also known as Aniridia glasses, are the most common form of vision correction for those with color blindness. They are made from polycarbonate and are able to filter out certain wavelengths of light. This allows one to see the world in a different way by allowing them to see more clearly than they would otherwise be able to.

Colorblind Glasses Benefits

  • Improve Your Daily Life
  • Pass Color Blindness Tests
  • Correct Colorblindness
  • Increase Confidence In Social Situations
  • Get The Right Shades For Your Activities

Colorblind Contact lenses Benefits

  • Glasses-free Color Correction Solution
  • Pass Color Blindness Tests
  • Avoid Embarrassment
  • A Boost In Confidence
  • Look Great In Photos
  • Prevent Discrimination
  • Better Job Opportunity

Color blindness contacts are an alternative to wearing color blind glasses. They are made of polymethyl methacrylate (PMMA) and can be worn over your regular contact lenses if you already have them. The PMMA acts as a filter that allows you to see the world in a different way by filtering out certain wavelengths of light. This lets you see the world in a clearer light than you would otherwise be able to see it in.

Frequently Asked Questions:

At what age can color blindness be diagnosed?

Color blindness is usually diagnosed at a young age, often when children start learning colors.

Can color blindness affect learning?

It might make certain tasks more challenging, but with proper support, it isn’t a barrier to academic success.

Can someone with color blindness still drive?

Yes, they are still able to drive, however the colours of traffic lights may appear differently to them.

Can color blindness skip a generation?

Yes, it’s possible. The gene that influences red-green color blindness is recessive and carried on the X chromosome, which can be passed down silently.

Can colour blindness be prevented?

Since it’s usually a genetic condition, it can’t be prevented.

Can you suddenly become color blind?

Most color blindness is inherited and present at birth. However, some diseases, conditions, or exposure to certain chemicals can cause color blindness.

Can lifestyle affect color blindness?

Lifestyle doesn’t affect genetic color blindness, but certain lifestyle factors might contribute to acquired color vision problems.

Can people with color blind join the military?

It depends on the severity of the deficiency and the specific branch of the military.

How does color-blindness affect children in school?

It might affect learning activities that rely on color, but most children adjust well with the right support.

Can foods or supplements improve colour blindness?

Foods or supplements cannot correct genetic color blindness.


Learning to live with red-green color blindness can be a daunting task. There are many things such as money, driving, and even people that you thought you knew very well but your red-green colorblindness has changed all of them

What was once simple is now difficult and leaves you with so many questions. Blind dates, holidays, riding bikes, or just coming home from work can cause anxiety due to all the uncertainty.

Color Blind Glasses help red green color blind people open a new world of colors, making it easier to go out, work, travel, and study while avoiding any disturbing situations.

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