deuteranopia

noun 0.817

tritanopia

noun 0.776

colour blindness

noun 0.640

achromatopsia

noun 0.634

color blindness

noun 0.633

nyctalopia

noun 0.607

protoporphyria

noun 0.592

protoporphyrin

noun 0.559

night blindness

noun 0.559

quadrantanopia

noun 0.550

porphyria

noun 0.535

prosopagnosia

noun 0.532

rhodopsin

noun 0.529

protoporphyrinogen oxidase

noun 0.525

achromat

noun 0.519

opsin

noun 0.518

amaurosis

noun 0.514

visual purple

noun 0.514

hypomelanosis

noun 0.505

albinism

noun 0.503

proline

noun 0.502

protogyny

noun 0.502