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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 17, Iss. 4 — Aug. 1, 2013
  • pp: 344–349

Computer Simulation for Gradual Yellowing of Aged Lens and Its Application for Test Devices

Bog G. Kim, Jeong-Won Han, and Soo-Been Park  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 17, Issue 4, pp. 344-349 (2013)


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Abstract

This paper proposes a simulation algorithm to assess the gradual yellowing vision of the elderly, which refers to the predominance of yellowness in their vision due to aging of the ocular optic media. This algorithm employed the spectral transmittance property of a yellow filter to represent the color appearance perceived by elderly people with yellow vision, and modeled the changes in the color space through a spectrum change in light using the yellow filter effect. The spectral reflectivity data of 1269 Munsell matte color chips were used as reference data. Under the standard conditions of a D65 illuminant and a <TEX>$10^{\circ}$</TEX> observer of 1964 CIE, the spectrum of the 1269 Munsell colors were processed through the yellow filter effect to simulate yellow vision. Various degrees of yellow vision were modeled according to the transmittance percentage of the yellow filter. The color differences before and after the yellow filter effect were calculated using the DE2000 formula, and the color pairs were selected based on the color difference function. These color pairs are distinguishable through normal vision, but the color difference diminishes as the degree of yellow vision increases. Assuming 80% of yellow vision effect, 17 color pairs out of <TEX>$(1269{\times}1268)/2$</TEX> pairs were selected, and for the 90% of yellow vision effect, only 3 color pairs were selected. The result of this study can be utilized for the diagnosis system of gradual yellow vision, making various types of test charts with selected color pairs.

© 2013 Optical Society of Korea

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.1730) Vision, color, and visual optics : Colorimetry
(330.4595) Vision, color, and visual optics : Optical effects on vision

History
Original Manuscript: April 24, 2013
Revised Manuscript: July 1, 2013
Manuscript Accepted: July 1, 2013
Published: August 25, 2013

Citation
Bog G. Kim, Jeong-Won Han, and Soo-Been Park, "Computer Simulation for Gradual Yellowing of Aged Lens and Its Application for Test Devices," J. Opt. Soc. Korea 17, 344-349 (2013)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-17-4-344


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