Custom-oriented wavefront sensor for human eye properties measurements

Sergey Galetskiy; Renat Letfullin; Alex Dubinin; Tatyana Cherezova; Alexey Belyakov; Alexis Kudryashov

doi:10.1117/12.669243

8 June 2006 Custom-oriented wavefront sensor for human eye properties measurements

Sergey Galetskiy, Renat Letfullin, Alex Dubinin, Tatyana Cherezova, Alexey Belyakov, Alexis Kudryashov

Proceedings Volume 6018, 5th International Workshop on Adaptive Optics for Industry and Medicine; 601806 (2006) https://doi.org/10.1117/12.669243
Event: 5th International Workshop on Adaptive Optics for Industry and Medicine, 2005, Beijing, China

Abstract

The problem of correct measurement of human eye aberrations 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). In this paper we show capabilities to measure aberrations by means of the aberrometer built in our lab together with Active Optics Ltd. We discuss the calibration of the aberrometer and show invalidity to use for the ophthalmic calibration purposes the analytical equation based on thin lens formula. We show that proper analytical equation suitable for calibration should have dependence on the square of the distance increment and we illustrate this both by experiment and by Zemax Ray tracing modeling. Also the error caused by inhomogeneous intensity distribution of the beam imaged onto the aberrometer's Shack-Hartmann sensor is discussed.

Citation Download Citation

Sergey Galetskiy, Renat Letfullin, Alex Dubinin, Tatyana Cherezova, Alexey Belyakov, and Alexis Kudryashov "Custom-oriented wavefront sensor for human eye properties measurements", Proc. SPIE 6018, 5th International Workshop on Adaptive Optics for Industry and Medicine, 601806 (8 June 2006); https://doi.org/10.1117/12.669243

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