monochromatism


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monochromatism

[¦män·ə¦krō·mə‚tiz·əm]
(medicine)
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This geographic pattern of monochromatism and dichromatism occurs repeatedly in each of the six major clades within the dabbling ducks (Anas): wigeons, mallards, blue-wings, austral teal, pintails, and the green wing clade (see [ILLUSTRATION FOR FIGURE 1A OMITTED] below) (Livezey 1991).
9%) of each of the following causes of visual impairments were noted: hypothalamic mass, blue-cone monochromatism, keratoconus, aniridia, Stargardt's disease, septic-optic dysplasia, neurofibromatosis, retinitis pigmentosa, optic nerve hypoplasia, chronic-neurotrophic ulcers, danuvetis, microthalmia, aphakia, and Leber's congenital amaurosis.
Onset of Level and visual grade Alias Diagnoses impairment Intermediate 5 Adam Type 1 neurofibromatosis Before Age 2 6 Bill Blue cone monochromatism Prenatal 6 Belle Retinitis pigmentosa (RP) Preschool 6 Bob Hypoplasia nervi optici Prenatal 7 Charles Retinopathy of prematurity (ROP) Prenatal 7 Claudia Hypoplasia nervi optici Prenatal High 8 David Tapetoretinal dystrophy Prenatal 9 Eddy Hypoplasia nervi optici Prenatal 9 Ella ROP Cerebral palsy Prenatal 10 Florence Hypoplasia nervi optici Prenatal 10 Francine Lawrence Moon Bart- Biedl syndrome (RP syndrome) Prenatal Reduction in Level and Near visual the visual Additional grade Alias acuity field disabilities Intermediate 5 Adam 0.