Free Color Blindness Test App From EnChroma – Can You See The Shapes?

If you can see the shapes above, you’re probably good. But if you can’t, you may be colorblind or at least partially colorblind due to some kind of deficiency. According to studies, more than 248 million people worldwide have difficulty distinguishing between red and green colors. If you are one of those people or think you may be, check out EnChroma’s new free app, Color Blindness Test. You can download it here in the App Store or you can complete the test on their website here.

It’s a simple app that will test you vision within a few minutes. Just start the test which consists of the patterns you see above in a wide range of colors. You have to answer with what shape you see in the middle. When it’s completed, the app will let you know if you may have problems. It’s free, simple, and something that everyone should get tested for.

Check out the full press release below for more information.

Press Release

Berkeley, Calif. – (November 28, 2012) – Did you know that eight percent of men and one percent of women have red-green color blindness? Approximately 10 million Americans and 284 million people worldwide have difficulty distinguishing red and green colors but many don’t realize they are color blind. In addition, many children with color blindness are frequently misdiagnosed with learning disabilities until they are an adult.  Not being able to distinguish between colors makes everyday tasks such as cooking, driving, dressing and shopping a challenge. EnChroma, Inc announces the release of a free Color Blindness Test for smartphones and tablets. Adults and children can take this test online at or by downloading the FREE app by searching for “enchroma” in their mobile device app store.

“In the diagnosis of poor color vision, the standard testing method requires a trip to the doctor’s office. This is the first time that a computer-based test is freely available that can accurately identify the type and extent of someone’s color vision deficiency,” says Don McPherson, PhD, vice-president, products, at EnChroma. “Thanks to a sponsorship by the National Institute of Health, I was able to create this app as a part of my National Eye Institute research project. Not only is it scientifically backed, it’s free to take and is easily available at your fingertips.”

“More than 1,000 people have already tested their vision since we posted our free test online last week,” says Andrew Schmeder, vice-president, technology, at Enchroma. “These early testers have been instrumental in adding to our understanding of the prevalence and severity of color blindness in the population.”

How It Works:
The EnChroma test is based on a special kind of image called a pseudo-isochromatic plate. The plate has a random pattern of dots with varying size and brightness, to camouflage the appearance of a simple geometric shape in the image, which is a circle, a square or a diamond. Because of the camouflage, the color of the dots is the only visual cue available to see the shape.

When the test starts, the hidden shapes are very easy to see because there is a large difference between the foreground and background colors. As the test proceeds the plates get more challenging.

At the conclusion of the test, the app provides the user with a diagnosis of their color vision including the type and extent of the deficiency, if any. This information can then be used to select the appropriate EnChroma eyewear if the user is interested in a solution that will help them have better color vision.

To learn more about the various EnChroma advanced optical solutions and how you can have Better Color Vision visit

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