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Off-axis measurements of a plano distance power progressive addition lens

Atchison, David A. & Kris, Michy (1993) Off-axis measurements of a plano distance power progressive addition lens. Ophthalmic and Physiological Optics, 13(7), pp. 322-326.

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Abstract

To test that the Humphrey Lens Analyzer can be used validly to measure off-axis powers of progressive addition lenses of low distance power, we made measurements of a plano distance progressive power lens with both a conventional focimeter and the Humphrey Lens Analyzer. The use of the Humphrey Lens Analyzer in two modes, one in which the lens rotated about its back surface centre of curvature (mode 2), gave off-axis power measurements which were similar to those of conventional measurements. In addition, the Humphrey Lens Analyzer in mode 1 gave prism measurements which were similar to conventional measurements. The Humphrey Lens Analyzer in mode 2 gave prism measurements which were less than those of conventional measurements, but the prism contours were similar and the differences were <1 Δ within 20 mm of the lens centre.

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6 citations in Web of Science®

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ID Code: 5095
Item Type: Journal Article
Additional Information: For more information, please refer to the journal's website (see link) or contact the author. Author contact details: d.atchison@qut.edu.au
Keywords: progressive addition lens, off, axis power, Humphrey Lens Analyzer
DOI: 10.1111/j.1475-1313.1993.tb00482.x
ISSN: 0275-5408
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 1993 Blackwell Publishing
Copyright Statement: The definitive version is available at www.blackwell-synergy.com
Deposited On: 28 Sep 2006
Last Modified: 15 Jan 2009 17:12

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