Depth of focus and visual acuity with primary and secondary spherical aberration
It is known that the depth of focus (DOF) of the human eye can be affected by the higher order aberrations. We estimated the optimal combinations of primary and secondary Zernike spherical aberration to expand the DOF and evaluated their efficiency in real eyes using an adaptive optics system. The ratio between increased DOF and loss of visual acuity was used as the performance indicator. The results indicate that primary or secondary spherical aberration alone shows similar effectiveness in extending the DOF. However, combinations of primary and secondary spherical aberration with different signs provide better efficiency for expanding the DOF. This finding suggests that the optimal combinations of primary and secondary spherical aberration may be useful in the design of optical presbyopic corrections. © 2011 Elsevier Ltd. All rights reserved.
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|Item Type:||Journal Article|
|Keywords:||Adaptive optics, Depth of focus, Higher order aberrations, Retinal image quality metric|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Schools > School of Optometry & Vision Science
|Copyright Owner:||Copyright 2011 Elsevier Ltd. All rights reserved.|
|Copyright Statement:||This is the author’s version of a work that was accepted for publication in Vision Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Vision Research, Volume 51, Issue 14, 15 July 2011, Pages 1648–1658. DOI: 10.1016/j.visres.2011.05.006|
|Deposited On:||24 Jun 2011 12:17|
|Last Modified:||21 Jan 2013 15:28|
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