Online test for color blindness

Written by sarah weddle
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Online test for color blindness
Colorblindess is a common problem you can learn more about online. (eyesight image by JASON WINTER from Fotolia.com)

According to Color Vision Testing, people are colorblind due to a genetic malfunction that affects the sensitivity of the pigments in the eye that allow for the recognition of colour. As such, an affected person will have difficulty seeing particular colours, depending on the particular pigments effected by the malfunction.

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Online Testing

There are many websites offering online testing for colour blindess. According to Color Vision Testing, these tests can be effective for establishing that a person is (or is not) colour blind; however, because computer monitor colours can vary, the tests are better suited for screening and not diagnosing. If you believe you are colour blind, you should visit an eye doctor.

Isihara Plates

One type of colorblind test usually found online is the Ishihara Plates test. This test involves an image made out of a series of colourful circles. Within the circle is an image, such as a number, that only a person with regular eyesight will be able to see. If you cannot see the image, you are most likely colour blind. Sample tests can be found by searching for Ishihara Plates colour blind testing on any search engine.

City University Dynamic Colour Vision Test

The City University Dynamic Colour Vision Test was developed by Professor John L. Barbur from the City University London as a computer colour vision test. Based on the same principles as the Ishihara test, Barbur's test can also be found by searching online with any search engine.

Colour Blindness Test

A colour blindness test, available at www.biyee.net is based on the Confusion Lines of the CIE 1931 Color Space. This particular test can provide you with more insight into which specific colour deficiency you may have.

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