Comparison of peripheral refractions determined by different instruments

Atchison, David A. (2003) Comparison of peripheral refractions determined by different instruments. Optometry and Vision Science, 80(9), pp. 655-660.

Abstract

PURPOSE: To compare peripheral refractions obtained with a Hartmann-Shack sensor instrument and two commercial autorefractors. METHODS: Measurements were taken with a laboratory Hartmann-Shack instrument, the Canon Autoref R-1, and the Shin-Nippon SRW-5000 to 40 degrees in both directions along the horizontal meridian. RESULTS: The agreement between the Hartmann-Shack instrument and the Shin-Nippon autorefractor was good, with mean power differences varying from 0.3 D at the center of the visual field to 0.7 D at the edge of the visual field. The agreement between the Hartmann-Shack and Canon Autoref R-1 was not as good, but neither was the agreement between the Shin-Nippon and Canon instruments. CONCLUSIONS: The agreement between the instruments was similar to other comparisons made between different techniques. Combined with the high magnitude of peripheral refractions, this indicates that the Hartmann-Shack sensor technique can validly be extended from measuring central refractions to measuring peripheral refractions.

Impact and interest:

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ID Code: 4614
Item Type: Journal Article
Refereed: Yes
Additional Information: Self-archiving of the author-version is not yet supported by this publisher. For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: d.atchison@qut.edu.au The contents of this journal can be freely accessed online via the journal’s web page (see link) 12 months after publication.
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Keywords: Comparative Study, Human, Models, Biological, Optometry/, instrumentation, Refraction, Ocular, Support, Non, U, S, Gov't, Visual Fields
ISSN: 1538-9235
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 > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2003 Lipincott, Williams and Wilkins
Deposited On: 22 Aug 2006 00:00
Last Modified: 29 Feb 2012 13:00

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