The skew ray issue in ocular aberration measurement [technical report]

Atchison, David A. (2006) The skew ray issue in ocular aberration measurement [technical report]. Optometry and Vision Science, 83(6), pp. 396-398.


I investigated the "skew ray" issue with respect to ocular aberration measurement. This arises for aberrometers that can distinguish only radial components of aberrations. Using simulations and Zernike aberrations, I found that rotationally symmetric coefficients are correctly determined but that asymmetric coefficients are underestimated. This underestimation is more pronounced as radial order of the aberrations becomes smaller and as angular dependence of aberrations becomes greater. There is also "leakage" to other orders, and errors are slightly affected by the sampling pattern. Aberrometers that can distinguish only radial components of aberrations do not provide good estimates of asymmetric aberrations.

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7 citations in Web of Science®
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ID Code: 9889
Item Type: Journal Article
Refereed: Yes
Additional Information: The contents of this journal can be freely accessed online via the journal’s web page (see link) 12 months after publication. For more information, please refer to the journal’s website (see link) or contact the author. Author contact details:
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Keywords: aberrations, aberrometers, skew ray issue
ISSN: 1538-9235
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Vision Science (111303)
Divisions: Current > Research Centres > Centre for Health Research
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2006 Lippincott Williams & Wilkins
Deposited On: 02 Oct 2007 00:00
Last Modified: 23 Apr 2015 00:19

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