The original Ishihara color blindness test was introduced in early last century and since then, it is
by far the most well known color vision deficiency test all around the world. Dr. Shinobu Ishihara from Japan produced three
different test sets which are widely used and which all based on the same pseudoisochromatic plates.
First test plate of the Ishihara CVD test.
This test is actually designed to be used in a booklet and is usually executed by an eye doctor. But I have made an onlince
version of the test, available right here.
The online test is based on the 38 plates edition and will give you a little feedback at the end of the test. As this test
is only made to check for any other form of CVD can not be detected. And at the end—if you like—you can even share
your test result with your friends. This way they can see how you performed and try the test themselves if they like to.