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7 December 2016 Fast and robust estimation of ophthalmic wavefront aberrations
Keith Dillon
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Journal of Biomedical Optics, Vol. 21, Issue 12, 121511 (December 2016). https://doi.org/10.1117/1.JBO.21.12.121511
Abstract
Rapidly rising levels of myopia, particularly in the developing world, have led to an increased need for inexpensive and automated approaches to optometry. A simple and robust technique is provided for estimating major ophthalmic aberrations using a gradient-based wavefront sensor. The approach is based on the use of numerical calculations to produce diverse combinations of phase components, followed by Fourier transforms to calculate the coefficients. The approach does not utilize phase unwrapping nor iterative solution of inverse problems. This makes the method very fast and tolerant to image artifacts, which do not need to be detected and masked or interpolated as is needed in other techniques. These features make it a promising algorithm on which to base low-cost devices for applications that may have limited access to expert maintenance and operation.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE) 1083-3668/2016/$25.00 © 2016 SPIE
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Keith Dillon "Fast and robust estimation of ophthalmic wavefront aberrations," Journal of Biomedical Optics 21(12), 121511 (7 December 2016). https://doi.org/10.1117/1.JBO.21.12.121511
Published: 7 December 2016
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KEYWORDS
Sensors
Wavefronts
Biological research
Fourier transforms
Wavefront aberrations
Wavefront sensors
Image processing
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