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Subjective blur limits for higher order aberrations

Atchison, David A. & Guo, Huanqing (2010) Subjective blur limits for higher order aberrations. Optometry and Vision Science, 87(11), E890-E898.

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Abstract

Purpose: We compared subjective blur limits for defocus and the higher-order aberrations of coma, trefoil, and spherical aberration. ---------- Methods: Spherical aberration was presented in both Zernike and Seidel forms. Black letter targets (0.1, 0.35, and 0.6 logMAR) on white backgrounds were blurred using an adaptive optics system for six subjects under cycloplegia with 5 mm artificial pupils. Three blur criteria of just noticeable, just troublesome, and just objectionable were used.---------- Results: When expressed as wave aberration coefficients, the just noticeable blur limits for coma and trefoil were similar to those for defocus, whereas the just noticeable limits for Zernike spherical aberration and Seidel spherical aberration (the latter given as an “rms equivalent”) were considerably smaller and larger, respectively, than defocus limits.---------- Conclusions: Blur limits increased more quickly for the higher order aberrations than for defocus as the criterion changed from just noticeable to just troublesome and then to just objectionable.

Impact and interest:

5 citations in Scopus
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5 citations in Web of Science®

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ID Code: 38423
Item Type: Journal Article
Keywords: Aberration, Adaptive Optics, Blur Limits, Coma, Defocus, Spherical Aberration, Trefoil
DOI: 10.1097/OPX.0b013e3181f6fb99
ISSN: 1040-5488
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Vision Science (111303)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Copyright Owner: Copyright 2010 American Academy of Optometry
Deposited On: 11 Nov 2010 07:42
Last Modified: 01 Mar 2012 00:26

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