pseudoisochromatic plate
noun
pseu·do·isochromatic plate
¦sü(ˌ)dō+…-
: one of a set of colored plates that include some which appear isochromatic to individuals with color-vision abnormality and that are widely used as a test for color blindness compare ishihara test
Word History
Etymology
pseudoisochromatic from pseud- + isochromatic