Dr. Terrace L. Waggoner created a new way to test color blindness in young children. His test is a spin on an older method of testing for color blindness. Instead of using the traditional Ishihara test plates that have the numbers in different colored dots than the dots in the background, he created plates that had shapes on them. The shapes are easier to use with children as young as three. Children that age may not know all of their numbers yet, but are better are distinguishing between pictures. This test is a good way to test very young children to see whether or not they are colorblind. This will help them when they get into kindergarten because they will not be behind their peers when doing assignments. If parents already know that their child is colorblind before starting school, they can begin to take steps to help their child cope with this and not fall behind when they begin school.
Here is a video of the different plates: