Testing
The most common test is the Ishihara Color Test for Color Blindness. This test was named after Dr. Shinobu Ishihara who invented the test in 1917.
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. (Unknown, 2001)
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. (Unknown, 2001)