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Visual Acuity for Single Lines as a Function of Hue and Age
Jeffrey J. Kelton, Sandra K. Holmes and Robert H. Pollack
Vol. 49, No. 1 (Mar., 1978), pp. 141-145
Stable URL: http://www.jstor.org/stable/1128602
Page Count: 5
You can always find the topics here!Topics: Visual acuity, Eyes, Wavelengths, Child development, Colors, School principals, Luminance, Child psychology, Density, Refraction
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176 students in grades 2-12 were tested for visual acuity as a function of minimally resolvable red, yellow, green, and blue lines. A 3-way mixed analysis of variance revealed significant differences among the colors, with better acuity for longer wavelengths. Significant age effects as well as a sex X condition interaction were also found. Post hoc analysis revealed a significant quartic trend for age. It is argued that the differential acuity thresholds for hue and the curvilinear age trend may depend upon the coordination of the accommodation and refractive power of the eye, which are affected by differential growth rates of the lens and the axial length of the eye.
Child Development © 1978 Society for Research in Child Development