How color vision is tested:
This test measures your ability to see a pattern based on its color. By testing with different colors we are able to understand which colors you may have difficulty seeing. When a person has color blindness, they are able to see some colors better than others. Depending on which colors are seen, the type and extent of color vision deficiency can be estimated.
You will see a series of images composed of dots with varying size and lightness. Look for a shape, such as a number or symbol, which is embedded within the dot pattern. Tap or click the button corresponding to which shape you see. On a computer the keyboard or number pad can also be used.
Should I guess?
Yes! If you think you can see a shape, but are still not 100% certain of your choice, it is better to take your best guess. If you are completely unsure or see nothing, then tap or click the button that says "Unsure" or Nothing". If using the keyboard you can also press "Enter" or "Space" to indicate the "Nothing" response.
What happens if I wear EnChroma glasses while taking this test?
The test is not designed to measure the change in color perception caused by EnChroma glasses. In fact, depending on which glasses you are wearing, results could be worse, or could change in ways that are confusing. This test is intended only as a rapid assessment test to estimate the type and extent of color vision deficiency - it does not measure color vision aptitude or fine color discrimination.
Can the test be used for a child?
Sure! We recommend the following Test Options for testing with children:
I got different results on a different device, why?
Results may vary depending on the quality of screen on your device. If you have a computer that is older or has a low quality of color rendering, you should change the Display Color Quality to Low in the Test Options. If you have a calibrated 100% gamut area screen, select "Best".Back to Main Menu
While taking this test, please DO NOT wear any type of filtering eyewear or tinted lenses.
The EnChroma Cx lenses are not designed to defeat color blindness screening tests and are not certified to improve your score on this test.Continue...
Sorry, a problem was detected in the responses provided.
Please read the instructions and try again. If you get this error again, you may have a color deficiency that is too strong to be measured using this app.Try Again
Sorry, an internal error condition was detected.
Please try the test again. If you get this error again, you may have a color deficiency that is too strong to be measured using this app.Try Again
Color blindness (also called color vision deficiency or CVD) is a reduced ability to see colors.
Someone who is color blind is technically not "blind" to colors, but may misidentify, confuse, fail to notice or notice colors less quickly than normal.
About 1 in 12 male and 1 in 200 females worldwide have congenital red-green color vision deficiency (CVD). An estimated 3-4% of the population has acquired blue-yellow CVD associated with an age-related low-vision disorder.
Protans have a red-green color vision deficiency caused by an anomaly in the red-sensitive retinal cone cells. Protans typically confuse between orange versus green, red versus black, blue versus purple, and light red (or "salmon") versus gray.
Deutans have a red-green color vision deficiency caused by an anomaly in the green-sensitive retinal cone cells. Deutans typically confuse shades of yellow versus green, green versus gray and magenta (or "pink") versus gray.
Tritans have a blue-yellow color vision deficiency caused by an anomaly of the blue-sensitive retinal cone cells. Tritans typically confuse shades of yellow versus gray and blue versus gray.
CVD is classified by type (protan, deutan or tritan) as well as the extent which can be mild, moderate or strong.
This test is not a medical diagnosis and has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Results may vary depending on the color accuracy of your display. Please consult your eye care professional for more information about color vision deficiency.Back to Main Menu
The EnChroma® Color Blindness Test is a self-assessment tool to measure type and extent of color vision deficiency. This test is for informational purposes only. If you believe you may have a color vision deficiency please consult an eye care professional.
Results may vary depending on many factors including the type and quality of your device display, and operating system configuration. Before starting the test, turn off any software that may alter the screen color. Blue light filtering software (such as Night Shift and f.lux) may cause the test to return a "tritan" classification.
Taking this test with colored glasses including "color blind glasses" may cause the test to return an erroneous classification. To ensure accuracy of the result, remove any filtering eyewear or lenses.
The EnChroma® Color Blindness Test was created by EnChroma, Inc. of Berkeley, CA.
EnChroma envisions a world where the color blind have equal access to the experience of color, enabling opportunities, connections, and exploration.
Learn more at enchroma.com.
Copyright 2015-2020 EnChroma, Inc. All rights reserved. Unauthorized use and copying will be prosecuted to the fullest extent of the law.
EnChroma is a registered trademark of EnChroma, Inc.Back to Main Menu
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Make sure your device is connected to the network or try again later.Back to Main Menu
Sorry, the EnChroma Color Blindness Test detected an internal error. The test is presently unable to operate on your device.Back to Main Menu