Are there tests for colorblindness?

Yes: The tests for colorblindness are straightforward. All are based on the idea of having patients distinguish colored items or shapes from a background of a different color, which would be indistiguishable for a person with a specific color blindness. The simplest are printed sheets or cards, but many ophthalmolgists and the dmv often use computer based tests based on the same principle.

Yes: The ishihara color test is an example of a color perception test for red-green color deficiencies. It was named after its designer, dr. Shinobu ishihara. Further testing can be done by ophthalmologist.