The Ishihara Color test is a test to determine if a patient has color blindness. It was named after Dr. Shinobu Ishihara who first published the test in 1917 as a professor at the University of Tokyo.

The test is made up of a series of circles comprising many small colored dots, called Ishihara Plates. Certain colored dots within each circle combine to form a number or pattern – the ability to correctly determine the number or pattern reveals whether or not a person may be color blind.

While the full test contains 38 plates, our test comprises the first 24 plates and will give you an accurate idea of the severity of your color blindness. This test is designed to identify the most common form of color blindness – red green color blindness.