Holographic multivergence target for subjective measurement of the astigmatic error of the human eye
Optics Letters, Vol. 32, Issue 13, pp. 1926-1928 (2007)
http://dx.doi.org/10.1364/OL.32.001926
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Abstract
In subjective refraction the spherical and cylindrical errors of the human eye are measured. Recently, we reported a technique by which the spherical error can be measured in one step using a hologram [ K. V. Avudainayagam and C. S. Avudainayagam, Opt. Lett. 28, 123 (2003) ]. We have now developed a holographic target consisting of sunburst patterns to measure the astigmatic error of the human eye as well. Apart from being simple, quick, and low cost, holography offers the advantage of being an open field refraction system that is devoid of the problem of proximal accommodation. We describe the holographic target, its working principles, the measurement procedure, and the initial results obtained.
© 2007 Optical Society of America
OCIS Codes
(090.2890) Holography : Holographic optical elements
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.7310) Vision, color, and visual optics : Vision
ToC Category:
Vision, color, and visual optics
History
Original Manuscript: February 20, 2007
Revised Manuscript: May 6, 2007
Manuscript Accepted: May 7, 2007
Published: June 25, 2007
Virtual Issues
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics
Citation
Kodikullam V. Avudainayagam and Chitralekha S. Avudainayagam, "Holographic multivergence target for subjective measurement of the astigmatic error of the human eye," Opt. Lett. 32, 1926-1928 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-32-13-1926
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