May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
Combining Rim Area to Disc Area Asymmetry Ratio (Radaar) and Moorfields Classification for HRT III - Based Diagnosis of Glaucoma
Author Affiliations & Notes
  • A. A. Kamdeu Fansi
    University of Montreal, Montreal, Quebec, Canada
    Ophthalmology Research,
  • H. Boisjoly
    University of Montreal, Montreal, Quebec, Canada
    Ophthalmology Research,
  • M. Chagnon
    University of Montreal, Montreal, Quebec, Canada
    Mathematics and Statistics,
  • P. J. Harasymowycz
    University of Montreal, Montreal, Quebec, Canada
    Ophthalmology Research,
  • Footnotes
    Commercial Relationships  A.A. Kamdeu Fansi, None; H. Boisjoly, None; M. Chagnon, None; P.J. Harasymowycz, None.
  • Footnotes
    Support  Fonds de recherche en ophtalmologie de l'Université de Montréal, FRSQ-Réseau Vision
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 3599. doi:https://doi.org/
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      A. A. Kamdeu Fansi, H. Boisjoly, M. Chagnon, P. J. Harasymowycz; Combining Rim Area to Disc Area Asymmetry Ratio (Radaar) and Moorfields Classification for HRT III - Based Diagnosis of Glaucoma. Invest. Ophthalmol. Vis. Sci. 2008;49(13):3599. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: : To determine the utility of combining rim area to disc area asymmetry ratio (RADAAR) and Moorfields Classification of HRT III on glaucoma diagnosis

Methods: : 460 subjects were included in this study. RADAAR values were calculated based on stereometric HRT II values by dividing the value of the smaller rim / disc area to the value of the greater rim / disc area. Gold-standard was clinical diagnosis of glaucomatous optic nerve damage. Main Outcome measures included Sensitivity, specificity values of single HRTIII-MFC test and combining HRTIII - RADAAR - MFC tests.

Results: : Range of results for HRTIII - MFC: Sensitivity =52.81%-74.77%; Specificity=63.43%-71.50%. Range of results for HRTIII - RADAAR - MFC: Sensitivity=43.17%-76.05%; Specificity=78.32%-86.56%.

Conclusions: : By combining rim area to disc area asymmetry ratio (RADAAR) and Moorfields Classification (MFC), sensitivity and specificity changed. This may be useful when using HRTIII for the purpose of mass screening

Keywords: clinical (human) or epidemiologic studies: risk factor assessment • optic nerve • imaging/image analysis: clinical 
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