Abstract

Although the longitudinal chromatic aberration (LCA) of the adult eye has been studied, there are no data collected from the human infant eye. A chromatic retinoscope was used to measure cyclopleged infant and adult refractions with four pseudomonochromatic sources (centered at 472, 538, 589, and 652nm) and with polychromatic light. The LCA of the infant eyes between 472 and 652nm was a factor of 1.7 greater than the LCA found in the adult group: infant mean=1.62D, SD±0.14D; adult mean=0.96D, SD±0.17D. The elevated level of LCA in infant eyes is consistent with the greater optical power of the immature eye and indicates similar chromatic dispersion in infant and adult eyes. The implications for visual performance, defocus detection, and measurement of refraction are discussed.

© 2008 Optical Society of America

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