pseudoisochromatic

adjective

pseu·​do·​iso·​chro·​mat·​ic -ˌī-sə-krō-ˈmat-ik 

: falsely or apparently isochromatic

specifically : of, relating to, using, or being a set of colored plates that include some which appear isochromatic to individuals with color-vision abnormality and that are used in the Ishihara test for color blindness