What is the most common color vision test?
What is the most common color vision test? A set of images called the Ishihara color plates is one of the most common and reliable color blind tests. Simply look at the images, which have numbers embedded in dots of color. The numbers are a different color than the background.
What colors can a colorblind person see?
Most color-blind people can clearly see things like others, but they are unable to fully “appreciate or see” red, green, or blue light. There are extremely rare cases where people are unable to see any color at all, but the most common color blindness is red-green color blindness.