monochromatism

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Related to cone monochromatism: Rod monochromacy

monochromatism

 [mon″o-kro´mah-tizm), (mon″o-kro″mah-top´se-ah] (monochromatopsia) monochromatic vision.
cone monochromatism that in which there is some cone function.
rod monochromatism that in which there is complete absence of cone function.

mon·o·chro·ma·tism

(mon-ō-krō'mă-tizm),
1. The state of having or exhibiting only one color.
2. Synonym(s): achromatopsia
[mono- + G. chrōma, color]

monochromatism

/mono·chro·ma·tism/ (-kro´mah-tizm) monochromatic vision.
cone monochromatism  that in which there is some cone function.
rod monochromatism  that in which there is complete absence of cone function.

monochromatism

(mŏn′ə-krō′mə-tĭz′əm)
n.
1. The condition of being completely colorblind.
2. The quality or condition of having or exhibiting only one color: sexual monochromatism in plumage.

monochromatism

(1) Complete colour blindness, see there.
(2) A state or thing with only one colour.

mon·o·chro·ma·tism

(mon'ō-krō'mă-tizm)
1. The state of having or exhibiting only one color.
2. Synonym(s): achromatopsia.
[mono- + G. chrōma, color]

achromatism 

1. The condition of being totally colour blind. Syn. achromatopsia.
2. Absence of colour.
3. Condition of a lens or an optical system corrected for, or free from, chromatic aberration. See monochromat.

monochromat

Person who has a condition of monochromatism (total colour blindness). There are two types of monochromats: the cone monochromat whose photopic luminosity curve resembles the normal and who has normal visual acuity and dark adaptation; and the rod monochromat whose retina does not contain functional cones and, therefore, has poor vision, photophobia and sometimes associated nystagmus and myopia. Monochromats are very rare: estimated at about three persons in 100 000. See achromatopsia; defective colour vision; cone dystrophy.

mon·o·chro·ma·tism

(mon'ō-krō'mă-tizm)
1. The state of having or exhibiting only one color.
2. Synonym(s): achromatopsia.
[mono- + G. chrōma, color]