Influence of Stiles-Crawford effect apodization on spatial visual performance.

D A Atchison; A Joblin; G Smith

doi:10.1364/josaa.15.002545

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PubMed · 9729867

Influence of Stiles-Crawford effect apodization on spatial visual performance.

D A Atchison·A Joblin·G Smith

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Abstract

The Stiles-Crawford effect is often invoked by vision scientists when predictions of the effects of aberrations and defocus on spatial visual performance are not borne out experimentally. Modeling the Stiles-Crawford effect as an apodization, we investigated the expected influence that it would have on spatial visual performance in the presence of 1-diopter primary spherical aberration at the edge of a 6-mm-diameter centered pupil. The changes in refraction produced by a high Stiles-Crawford effect, according to various criteria, were small at approximately 0.10 diopter. The Stiles-Crawford effect has only a small capability to compensate for defocus and spherical aberration. These results indicate that the Stiles-Crawford effect has little influence on spatial visual performance in the case of centered pupils. We suggest that the faith that has often been placed in the Stiles-Crawford effect to account for discrepancies between experimental results and expected results is not justified, at least for well-centered pupils and Stiles-Crawford effects.

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Light Models, Biological Refraction, Ocular Retina Space Perception Visual Perception Journal Article Research Support, Non-U.S. Gov't

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D A Atchison, A Joblin, G Smith. 1998. Influence of Stiles-Crawford effect apodization on spatial visual performance.. https://doi.org/10.1364/josaa.15.002545

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