April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
Retardation Measurement in Optic Nerve Fiber Layer by Using a Polarization Camera
Y. Fukuma; Y. Okazaki; T. Shioiri; Y. Iida; H. Kikuta; M. Shirakashi; K. Yaoeda; H. Abe; K. Ohnuma
Author Affiliations & Notes
  • Y. Fukuma
    TOPCON Advanced Biomedical Imaging Lab, Topcon Medical Systems, Paramus, New Jersey
  • Y. Okazaki
    Topcon Corporation, Itabashi-ku, Tokyo, Japan
  • T. Shioiri
    Topcon Corporation, Itabashi-ku, Tokyo, Japan
  • Y. Iida
    Faculty of Health Science, Komazawa University, Setagaya-ku, Tokyo, Japan
  • H. Kikuta
    Osaka Prefectural University, Sakai-shi, Osaka, Japan
  • M. Shirakashi
    Division of Ophthalmology and Visual Sciences, Niigata University Graduate School of Medical and Dental Science, Niigata-shi, Niigata, Japan
  • K. Yaoeda
    Division of Ophthalmology and Visual Sciences, Niigata University Graduate School of Medical and Dental Science, Niigata-shi, Niigata, Japan
  • H. Abe
    Division of Ophthalmology and Visual Sciences, Niigata University Graduate School of Medical and Dental Science, Niigata-shi, Niigata, Japan
  • K. Ohnuma
    Division of Artificial System Science, Graduate School of Chiba University, Inage-ku, Chiba, Japan
  • Footnotes
    Commercial Relationships  Y. Fukuma, Topcon Medical Systems, E; Y. Okazaki, Topcon corporation, E; T. Shioiri, Topcon Corporation, E; Y. Iida, None; H. Kikuta, None; M. Shirakashi, None; K. Yaoeda, None; H. Abe, None; K. Ohnuma, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 6218. doi:
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      Y. Fukuma, Y. Okazaki, T. Shioiri, Y. Iida, H. Kikuta, M. Shirakashi, K. Yaoeda, H. Abe, K. Ohnuma; Retardation Measurement in Optic Nerve Fiber Layer by Using a Polarization Camera. Invest. Ophthalmol. Vis. Sci. 2009;50(13):6218.

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Abstract

Purpose: : To quantify the retardation in the optic nerve fiber layer obtained by using a polarization fundus camera. This camera can detect the Stokes Vector and cancel the effect of cornea retardation using a mathematical technique. So, we can quantify the retardation of the optic nerve fiber layer with one camera shot followed by a calculation. The degree of retardation has a strong relationship with the thickness of the optic nerve fiber layer.

Methods: : The fundus images of twenty normal eyes were obtained by the polarization fundus camera. The retardations of the optic nerve fiber layer around the optic disk were obtained by calculation. Also, the thickness of each optic nerve fiber layer around the optic disk was measured by using OCT. The retardation and the thickness were compared to one another.

Results: : We found a good correlation between the retardation and the thickness of the optic nerve fiber layer around the optic disk.

Conclusions: : With this simply constructed system and using a mathematical technique, we could calculate the retardation caused only by the optic nerve fiber layer, and we can predict the thickness of the optic nerve fiber layer. This system can be easily implemented in fundus imaging systems. This instrument will improve diagnosis of the retina.

Keywords: imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound) • nerve fiber layer 
© 2009, The Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Permission to republish any abstract or part of an abstract in any form must be obtained in writing from the ARVO Office prior to publication.
Copyright © 2025 Association for Research in Vision and Ophthalmology.
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