Double-pass measurement of human eye aberrations: limitations and practical realization

Renat R. Letfullin; Alexey I. Belyakov; Tatyana Yu Cherezova; Alexis V. Kudryashov

doi:10.1117/12.568282

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11 November 2004 Double-pass measurement of human eye aberrations: limitations and practical realization

Renat R. Letfullin, Alexey I. Belyakov, Tatyana Yu Cherezova, Alexis V. Kudryashov

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Proceedings Volume 5572, Optics in Atmospheric Propagation and Adaptive Systems VII; (2004) https://doi.org/10.1117/12.568282
Event: Remote Sensing, 2004, Maspalomas, Canary Islands, Spain

Abstract

The problem of correct eye aberrations measurement is very important with the rising widespread of a surgical procedure for reducing refractive error in the eye, so called, LASIK (laser-assisted in situ keratomileusis). The double-pass technique commonly used for measuring aberrations of a human eye involves some uncertainties. One of them is loosing the information about odd human eye aberrations. We report about investigations of the applicability limit of the double-pass measurements depending upon the aberrations status introduced by human eye and actual size of the entrance pupil. We evaluate the double-pass effects for various aberrations and different pupil diameters. It is shown that for small pupils the double-pass effects are negligible. The testing and alignment of aberrometer was performed using the schematic eye, developed in our lab. We also introduced a model of human eye based on bimorph flexible mirror. We perform calculations to demonstrate that our schematic eye is capable of reproducing spatial-temporal statistics of aberrations of living eye with normal vision or even myopic or hypermetropic or with high aberrations ones.

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Renat R. Letfullin, Alexey I. Belyakov, Tatyana Yu Cherezova, and Alexis V. Kudryashov "Double-pass measurement of human eye aberrations: limitations and practical realization", Proc. SPIE 5572, Optics in Atmospheric Propagation and Adaptive Systems VII, (11 November 2004); https://doi.org/10.1117/12.568282

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