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. In fact, depending on which glasses you are wearing, results could be worse, or could change in ways that are confusing. The test is not designed to measure the change in color perception caused by EnChroma glasses. What happens if I wear EnChroma glasses while taking this test? If using the keyboard you can also press 'Enter' or 'Space' to indicate the 'Nothing' response. If you are completely unsure or see nothing, then tap or click the button that says 'Unsure' or Nothing'. 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. On a computer the keyboard or number pad can also be used. Tap or click the button corresponding to which shape you see. Look for a shape, such as a number or symbol, which is embedded within the dot pattern. You will see a series of images composed of dots with varying size and lightness. Depending on which colors are seen, the type and extent of color vision deficiency can be estimated. When a person has color blindness, they are able to see some colors better than others. By testing with different colors we are able to understand which colors you may have difficulty seeing. This test measures your ability to see a pattern based on its color.

Color test page