daltonism
/ˈdɔːltənɪzəm/
noun
- A type of color blindness where a person has difficulty distinguishing between red and green.
- The test for daltonism uses patterns of colored dots to check color vision.
- Many people with daltonism learn to rely on the position of lights rather than their color.
- Because of his daltonism, he couldn't tell if the traffic light was red or green.