Achromatopsia: An hereditary disorder of sight due to a lack of cone vision - that type of vision provided by the cone photoreceptors in the retina. In the normal eye, there are some 6 million cone photoreceptors; they are located largely in the center of the retina. Lacking cones, persons with achr...
Found op http://www.medterms.com/script/main/art.html?articlekey=11286
A severe congenital deficiency in colour perception, often associated with nystagmus and reduced visual acuity. ... Synonym: achromatic vision, monochromasia, monochromasy, monochromatism. ... Origin: G. A-priv. + chroma, colour, + opsis, vision ... (05 Mar 2000) ...
Found op http://www.mondofacto.com/facts/dictionary?achromatopsia
(ә-kro″mә-top´se-ә) monochromatic vision.
Found op http://www.encyclo.co.uk/local/21001
(from the article `colour blindness`) Acquired colour blindness is usually of the blue-yellow type and can be due to retinal diseases, glaucoma, or optic nerve diseases. Total colour ...
Found op http://www.britannica.com/eb/a-z/a/12
Type: Term Pronunciation: ă-krō′mă-top′sē-ă, a-krō′mă-top-sē Definitions: 1. The complete form of achromatopsia, characterized by severe deficiency of color perception, associated with nystagmus, photophobia, reduced visual acuity, and 'day b...
Found op http://www.medilexicon.com/medicaldictionary.php?t=642
A hereditary condition in which an individual is nearly or completely colorblind. The condition is rare and affects only one person in about 33,000.
Found op http://www.pregnology.com/AZ/A/2
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