| AVT | Allen vision test; arginine vasotocin; Aviation Medicine Technician |
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| BSV | binocular single vision |
| D&N | distance and near [vision] |
| DV | dependent variable; diagnostic variable; difference in volume; digital vibration; dilute volume; dis... |
| DVIU | direct-vision internal urethrotomy |
| rod vision | Vision when the eye is dark-adapted. See: dark adaptation, dark-adapted eye. Synonym: night vision, rod vision, scotopia, twilight vision. (05 Mar 2000) |
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| chromatic vision | A condition in which objects appear to be abnormally coloured or tinged with colour; designated according to the colour seen: xanthopsia, yellow vision; erythropsia, red vision; chloropsia, green vision; cyanopsia, blue vision. Synonym: chromatic vision, coloured vision, tinted vision. Compare: dyschromatopsia. Origin: chromato-+ G. Opsis, vision (05 Mar 2000) |
| photopic vision | Vision when the eye is light-adapted. See: light adaptation, light-adapted eye. Synonym: cone vision, photopia. (05 Mar 2000) |
| coloured vision | A condition in which objects appear to be abnormally coloured or tinged with colour; designated according to the colour seen: xanthopsia, yellow vision; erythropsia, red vision; chloropsia, green vision; cyanopsia, blue vision. Synonym: chromatic vision, coloured vision, tinted vision. Compare: dyschromatopsia. Origin: chromato-+ G. Opsis, vision (05 Mar 2000) |
| colour vision defects | Mild to severe impairment in the ability to discriminate or differentiate hues. This disorder may be acquired as a result of diseases of the cones or x chromosome-linked where there is an abnormality but not a complete absence of one of the cone pigments. (12 Dec 1998) |
| cone vision | Vision when the eye is light-adapted. See: light adaptation, light-adapted eye. Synonym: cone vision, photopia. (05 Mar 2000) |
| multiple vision | polyopia |
| halo vision | A condition in which coloured or luminous rings are seen around lights. (05 Mar 2000) |
| haploscopic vision | Stereoscopic vision produced by the haploscope, or mirror-type stereoscope. (05 Mar 2000) |
| Helmholtz theory of colour vision | A theory that there are three colour-perceiving elements in the retina: red, green, and blue. Perception of other colours arises from the combined stimulation of these elements; deficiency or absence of any one of these elements results in inability to perceive that colour and a misperception of any other colour of which it forms a part. Synonym: Helmholtz theory of colour vision. (05 Mar 2000) |
| Hering's theory of colour vision | That there are three opponent visual processes: blue-yellow, red-green, and white-black. (05 Mar 2000) |
| scotopic vision | Vision when the eye is dark-adapted. See: dark adaptation, dark-adapted eye. Synonym: night vision, rod vision, scotopia, twilight vision. (05 Mar 2000) |
| stereoscopic vision | The single perception of a slightly different image from each eye. Synonym: stereopsis. (05 Mar 2000) |
| night vision | Vision when the eye is dark-adapted. See: dark adaptation, dark-adapted eye. Synonym: night vision, rod vision, scotopia, twilight vision. (05 Mar 2000) |
| subjective vision | Visual impressions that arise centrally and do not originate with ocular stimuli. (05 Mar 2000) |
| color vision deficiency |
inability to recognize certain colors, primarily red or green, but rarely blue
Ãâó: www.preventblindness.org/uveitis/glossary.html
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| color vision deficiency |
Difficulty with distinguishing one or more colors, typically an inherited deficiency of varying severity that is more common in males (8% prevalence) compared to females (1%).
Ãâó: www.ferris.edu/htmls/academics/course.offerings/cr...
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| color vision d. |
any deviation from normal color vision; these conditions are popularly called by the misleading term color blindness. See monochromatic vision, dichromatic vision, protanopia, deuteranopia, tritanopia, and tetartanopia.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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