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Journal of Biomedical Optics • Open Access

Comparison of sorting algorithms to increase the range of Hartmann-Shack aberrometry
Author(s): Phillip Bedggood; Andrew Metha

Paper Abstract

Recently many software-based approaches have been suggested for improving the range and accuracy of Hartmann-Shack aberrometry. We compare the performance of four representative algorithms, with a focus on aberrometry for the human eye. Algorithms vary in complexity from the simplistic traditional approach to iterative spline extrapolation based on prior spot measurements. Range is assessed for a variety of aberration types in isolation using computer modeling, and also for complex wavefront shapes using a real adaptive optics system. The effects of common sources of error for ocular wavefront sensing are explored. The results show that the simplest possible iterative algorithm produces comparable range and robustness compared to the more complicated algorithms, while keeping processing time minimal to afford real-time analysis.

Paper Details

Date Published: 1 November 2010
PDF: 7 pages
J. Biomed. Opt. 15(6) 067004 doi: 10.1117/1.3516706
Published in: Journal of Biomedical Optics Volume 15, Issue 6
Show Author Affiliations
Phillip Bedggood, The Univ. of Melbourne (Australia)
Andrew Metha, The Univ. of Melbourne (Australia)


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