What is Red Green Colorblindness?

Red green color blindness is a condition that reduces the ability of people to sort red and green colors among the mix. There's a good chance this is a congenital condition, meaning it was present at birth.Most people are unaware of the condition as it does not affect their daily lifestyle. 

The condition is also known as the green-red vision deficiency and is one of the most common types of color blindness. The red-green color deficiency affects about 0.5% of the population and is more frequent in males.

Persons with such a color vision deficiency cannot sort between red and green. Such colors appear brown to them. There are also various subcategories of red-green color blindness based on the severity. Some of them are Deuteranopia, Protanomaly, and Protanopia.

What is Red Green
Colorblind Test?

Red Green color blindness is also known as the Cambridge color test. The main objective of the test is to make users aware of the condition and to improve it by locating the gap in the C shaped Landolt Ring. The test is distinct from other color blindness tests as it includes three image series pairs, determining the severity of the red-green color blindness. 

The initial image pair only helps to check for the condition. The second series has color patterns of purple and blue, while the third series offers purple-green images to be identified by the user. 

If the score secured in the second image pair exceeds the third pair, the condition affecting the user will be Deutan color vision deficiency. Similarly, if the third image pair exceeds the score of the second pair, the condition will be protan color vision deficiency. 

Unlike other tests, the results generated can be used for clinical studies and research to learn about the limits of color distinctions. Furthermore, it also helps to study the effects of color distinction due to the deficiency.

Red Green Colorblind Test

How to take the test?

take a test

Take a Test

To take the test, go to colorblindtest.net with any browser, then navigate to the red green colorblindness test. Click the "take a test" button to begin the test.


See the Gap

Once the test starts, Find the gap in Landolt Ring (the one with a C-shape) using the arrow keys, and select the correct option you see in the image.


Get Result

After taking the test, you will get the result indicating your color vision status, type, and severity of color blindness.

Types of Red-Green Color Blindness

Deuteranomaly -

In such a condition, the ability to see green color is limited to a certain extent, while colors like red and blue appear normal to the person. It is a rare occurrence but does not affect the daily lifestyle. 

Deuteranopia -

Under such a condition, people tend to have little to no green cones, which causes difficulty in sorting green from other colors. Such a condition is not rare and does not cause problems with daily tasks.

Protanomaly -

A contrary condition to Deuteranomaly where people have reduced red cone pigments. This allows them to have limited perception related to the red color. It is also a common condition and does not affect regular activities.

Protanopia -

A person suffering from protanopia cannot see the elements colored in red. It is also a common condition that does not affect daily activities. However, a person can expect issues while driving and understanding signals. 

Causes of Red-Green ColorBlindness

Genetic inheritance is one of the common reasons for red-green color blindness. The chromosomes affecting the condition vary depending on the gender of the child. 

Diseases like Glaucoma and Cataracts can contribute to the condition. However, a condition caused due to such diseases can be treated and corrected. 

Overdose of medicines or anti-seizure drugs such as tiagabine can cause deuteranopia.

Alzheimer's, Sclerosis, or other nervous system breakdowns can trigger the condition leading to color deficiency.

Frequently Asked Questions

What Does A Person With Red-Green Color Blindness See? 

Those who are 'red/green colour blind' are easily confused by colors that contain some red or green as part of the overall color. As a result, someone who has red/green color blindness may confuse purple with blue because they cannot see the red element in purple.

How Does Red-Green Color Blindness Affect Daily Life?

Deuteranopia is a common condition and does not affect daily life in a significant manner. However, a person with protanopia will encounter issues while driving due to the inability to sort the color of traffic signals.