Color vision testing, commonly known as the Ishihara color test, evaluates your ability to distinguish colors. The test includes a professional color blindness test, a visual sensitivity exam, and an engaging visual discrimination challenge. It is reported that only 5% of people can answer all the questions correctly. If you cannot answer at least 80% of the questions correctly, it may suggest that your color vision is impaired, and you may need to see a doctor to check for color blindness.