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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 13 — Jul. 1, 2007
  • pp: 1926–1928

Holographic multivergence target for subjective measurement of the astigmatic error of the human eye

Kodikullam V. Avudainayagam and Chitralekha S. Avudainayagam  »View Author Affiliations


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/ol/abstract.cfm?URI=ol-32-13-1926


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References

  1. K. V. Avudainayagam and C. S. Avudainayagam, Opt. Lett. 28, 123 (2003). [CrossRef] [PubMed]
  2. K. V. Avudainayagam, C. S. Avudainayagam, N. Nicholas, K. W. Chiam, and C. Truong, "Performance of the holographic multivergence target in the measurement of spherical refractive error and amplitude of accommodation of the human eye," J. Opt. Soc. Am. A (to be published).
  3. R. B. Rabbetts, Bennett and Rabbetts' Clinical Visual Optics (Butterworth Heinemann, 1998).
  4. A. H. Tunnacliffe and J. G. Hirst, Optics (Association of British Dispensing Opticians, 1996).
  5. P. Hariharan, Optical Holography (Cambridge U. Press, 1984).

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