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Matthew P. Simunovic, Benedict C. Regan, J. D. Mollon; Is Color Vision Deficiency an Advantage under Scotopic Conditions?. Invest. Ophthalmol. Vis. Sci. 2001;42(13):3357-3364.
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purpose. To examine experimentally whether color vision deficiency confers a
selective advantage under scotopic conditions.
methods. Red-green color-deficient subjects, monochromats, and age-matched
color-normal control subjects were examined. In each subject the time
course of dark adaptation, scotopic visual field sensitivity, and
performance on a scotopic perceptual task were measured.
results. No significant differences were found between red-green color-deficient
subjects and control subjects on any of the three tests. Our small
sample of monochromats had higher absolute thresholds than the
corresponding control subjects, but their performance at the scotopic
visual field test and perceptual task did not differ significantly from
that of color-normal subjects.
conclusions. No evidence was found that red-green color deficiency or monochromatism
confers a selective advantage under scotopic
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