TY - GEN AU - MacLeod,D I AU - Hayhoe,M TI - Three pigments in normal and anomalous color vision SN - 0030-3941 PY - 1974///0411 KW - Color Perception KW - Color Perception Tests KW - Color Vision Defects KW - etiology KW - Humans KW - Light KW - Mathematics KW - Photic Stimulation KW - Retinal Pigments KW - physiology N1 - Publication Type: Comparative Study; Journal Article UR - https://doi.org/10.1364/josa.64.000092 ER -