 Kreft's dichromaticity index

Kreft's dichromaticity index is a measure used in the field of color science, particularly in the study of color perception. It quantifies the degree to which a color can be perceived by individuals with dichromacy, a condition in which a person is missing one type of color receptor (cone) in the eyes and therefore has a limited color vision compared to trichromats, who have three types of cones.