An experimental investigation of the vision of hyperopes and myopes using a hologram

doi:10.1364/BOE.3.001173

Biomedical Optics Express

Editor: Joseph A. Izatt
Vol. 3, Iss. 6 — Jun. 1, 2012
pp: 1173–1181

An experimental investigation of the vision of hyperopes and myopes using a hologram

Nicholas Nguyen, Chitralekha S. Avudainayagam, and Kodikullam V. Avudainayagam »View Author Affiliations

Biomedical Optics Express, Vol. 3, Issue 6, pp. 1173-1181 (2012)
http://dx.doi.org/10.1364/BOE.3.001173

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Abstract
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Abstract

A hologram of a specially designed multivergence target which displays real and virtual objects (numbers) simultaneously has been used to test the vision of various spectacle corrected subjects. Through the hologram, the subjects see standard ‘60-meter’ numbers that have different amounts of blur. It is found that there is a difference between myopes and hyperopes in the amount of positive blur with which they can recognize numbers seen through the hologram and this difference is statistically significant. A similar study was then conducted in white light illumination using the ‘60-meter’ numbers of a standard test chart at 6 meter distance and positive lenses to provide the blur at the eye. This study showed no difference between the refractive groups. Our results indicate that hyperopes may be relaxing their accommodation more than myopes in viewing through the hologram.

OCIS Codes
(090.2890) Holography : Holographic optical elements
(330.1070) Vision, color, and visual optics : Vision - acuity
(330.7310) Vision, color, and visual optics : Vision
(330.4595) Vision, color, and visual optics : Optical effects on vision
(330.7322) Vision, color, and visual optics : Visual optics, accommodation

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: January 10, 2012
Revised Manuscript: April 26, 2012
Manuscript Accepted: April 27, 2012
Published: May 2, 2012

Citation
Nicholas Nguyen, Chitralekha S. Avudainayagam, and Kodikullam V. Avudainayagam, "An experimental investigation of the vision of hyperopes and myopes using a hologram," Biomed. Opt. Express 3, 1173-1181 (2012)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-3-6-1173

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References

K. V. Avudainayagam and C. S. Avudainayagam, “Holographic multivergence target for subjective measurement of the spherical power error of the human eye,” Opt. Lett.28(2), 123–125 (2003). [CrossRef] [PubMed]
K. V. Avudainayagam, C. S. Avudainayagam, N. Nguyen, K. W. Chiam, and C. Truong, “Performance of the holographic multivergence target in the subjective measurement of spherical refractive error and amplitude of accommodation of the human eye,” J. Opt. Soc. Am. A24(10), 3037–3044 (2007). [CrossRef] [PubMed]
K. V. Avudainayagam and C. S. Avudainayagam, “Holographic multivergence target for subjective measurement of the astigmatic error of the human eye,” Opt. Lett.32(13), 1926–1928 (2007). [CrossRef] [PubMed]
H. Radhakrishnan, S. Pardhan, R. I. Calver, and D. J. O’Leary, “Unequal reduction in visual acuity with positive and negative defocusing lenses in myopes,” Optom. Vis. Sci.81(1), 14–17 (2004). [CrossRef] [PubMed]
K. V. Avudainayagam, C. S. Avudainayagam, and N. Nguyen, “Holographic multivergence target throws more light on the vision of hyperopes,” in ICO-21 Proceedings (2008), pp. 192–192.
N. Nguyen, C. S. Avudainayagam, and K. V. Avudainayagam, “Holographic target probes the vision of myopes and hyperopes,” Clin. Exp. Optom.92(1), 55 (2009).

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