These vision tests can only be considered a screening test and its validity is not guaranteed. A variety of factors such as lighting, glare, pixel resolution and monitor quality may have an effect on the results of this test.
You can test your color vision online by looking at the 6 images below. In each colored circle there is a number. If you can correctly identify each number your color perception is normal; if you cannot, it may indicate that you have a color vision problem and we would recommend seeing an eye doctor for an evaluation and examination.