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More than three different cone pigments among people with normal color vision.
Vision Research, 1993
A fundamental feature of normal color vision is that red and green lights can be mixed to appear identical with a monochromatic yellow light. Another characteristic of normal color vision is that people often disagree on the amounts of red and green ...
Color-vision mechanisms of the extrafoveal retina.
Vision Research, 1984
Wavelength discrimination, spectral sensitivity as well as color-matching performance were measured at the fovea and at different eccentricities in the peripheral retina. The results show that the underlying mechanisms of color vision in the normal ...
Infant luminance and chromatic contrast sensitivity: optokinetic nystagmus data on 3-month-olds.
Vision Research, 1995
Infant color vision is poor, and most psychophysical experiments agree that infant color vision emerges between ages 3 weeks and 3 months. Presumably, the color vision of infants is poor during the months immediately after it has emerged. We have tested ...
Dissociation of visual deficits in ocular hypertension.
Investigative Ophthalmology and Visual Science, 1988
Both acquired color vision deficiencies and abnormal pattern electroretinograms (PERGs) are observed in patients with ocular hypertension (OHT) as well as in patients with glaucoma. In the present study we determined the prevalence of both of these ...
Within-species variations in visual capacity among squirrel monkeys (Saimiri sciureus): color vision.
Vision Research, 1984
Color vision was studied in 27 squirrel monkeys (Saimiri sciureus) of Peruvian origin (Roman Arch variety). Tests of wavelength discrimination and Rayleigh matching as well as a search for a spectral neutral point were carried out in a behavioral paradigm ...
Color vision deficiencies in two cases of digoxin toxicity.
American journal of ophthalmology, 1985
Color vision deficiencies are a common sign of digoxin intoxication and color vision testing can be used to diagnose digoxin toxicity. We tested two patients, a 79-year-old man and a 61-year-old man, with digoxin toxicity by means of the ...
A perspective on color vision in platyrrhine monkeys.
Vision Research, 1998
Studies carried out over the past two decades show that many platyrrhine (New World) monkeys have polymorphic color vision. This condition results from the sorting of allelic versions of X-chromosome cone opsin genes at a single gene site, yielding a ...
Color vision in children and the Lanthony New Color Test.
Visual neuroscience, 2008
Much is known about color vision in infants, adolescents, and adults, but very few studies report the changes, which occur in color perception of children in their early schooling years. There is also a shortage of suitable color vision tests for ...