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http://dx.doi.org/10.9717/kmms.2012.15.5.595

A New Software for Quantitative Measurement of Strabismus based on Digital Image  

Kim, Tae-Yun (국립암센터 융합기술연구부 의공학연구과)
Seo, Sang-Sin (국립암센터 융합기술연구부 의공학연구과)
Kim, Young-Jae (국립암센터 융합기술연구부 의공학연구과)
Yang, Hee-Kyung (서울대학교 안과학교실, 분당서울대학교병원 안과)
Hwang, Jeong-Min (서울대학교 안과학교실, 분당서울대학교병원 안과)
Kim, Kwang-Gi (국립암센터 융합기술연구부 의공학연구과)
Publication Information
Journal of Korea Multimedia Society / v.15, no.5, 2012 , pp. 595-605 More about this Journal
Abstract
Various methods for measuring strabismus have been developed and used in clinical diagnosis. However, most of them are based on the visual inspection by clinicians. For this reason, there is a high possibility of subjective evaluation in clinical decisions and they are only useful for cooperative patients. Therefore, the development of a more objective and reproducible method for measuring strabismus is needed. In this paper, we introduce a new software to complement the limitations of previous diagnostic methods. Firstly, we simply obtained facial images of patients and performed several preprocessing steps based on the spherical RGB color model with them. Then, the measurement of strabismus was performed automatically by using our 3D eye model and mathematical algorithm. To evaluate the validity of our software, we performed statistical correlation analysis of the results of the proposed method and the Krimsky test by two clinicians for ten patients. The coefficients of correlation for two clinicians were very high, 0.955 and 0.969, respectively. The coefficient of correlation between two clinicians also showed 0.968. We found a statistically significant correlation between two methods from our results. The newly developed software showed a possibility that it can be used as an alternative or effective assistant tool of previous diagnostic methods for strabismus.
Keywords
Strabismus; Three-dimensional eye model; Image analysis; Quantification;
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