Retrieval of wave aberration of human eyes from actual point-spread-function data
نویسندگان
چکیده
منابع مشابه
Retrieval of wave aberration of human eyes from actual point-spread-function data.
The wave aberration of human eyes is retrieved from actual point-spread-function (PSF) data and the modulus of the pupil function. The PSF had been obtained previously by application of a hybrid optical-digital method developed recently. The retrieval is done by using a bidimensional Gerchberg-Saxton phase-retrieval algorithm joined to an iterative phase-unwrapping algorithm. To obtain an adequ...
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A new, to my knowledge, procedure for retrieving the wave aberration from the point-spread function is presented. It uses the Levenberg-Marquardt optimization algorithm in a mutiresolution pyramidal scheme. The method, tested with simulated large aberrations without initial estimates, accelerates convergence and avoids stagnation in local minima.
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The bidimensional phase-transfer function (PTF) of the human eye has been computed from aerial retinal images of a point test. These images were previously determined by using a recently developed hybrid optical-digital method. Actual PTF data have been obtained directly without linear variations with spatial frequency and have shown great variations among individual subjects. The influence of ...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 1988
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.5.001201