Journal of Korean Ophthalmic Optics Society (한국안광학회지)

The Korean Ophthalmic Optics Society (한국안광학회)
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Estimation of Total Astigmatism Quantity from Corneal Astigmatism on Koreans in Their Twenties

한국인의 20대에서 각막난시에 의한 전난시량의 예측

  • Yoo, Jong-Sook (Department of Ophthalmic Optics Keukdong College) ;
  • Yu, Dong-Sik (Department of Visual Optics, Kyungwoon University) ;
  • Han, Kyung-Ae (Department of Ophthalmic Optics Keukdong College) ;
  • Kim, Se-Jin (Department of Ophthalmic Optics Keukdong College) ;
  • Wi, Sung-Hyun (Department of Visual Optics, Kyungwoon University)
  • 유종숙 (극동정보대학 안경광학과) ;
  • 유동식 (경운대학교 안경광학과) ;
  • 한경애 (극동정보대학 안경광학과) ;
  • 김세진 (극동정보대학 안경광학과) ;
  • 위성현 (경운대학교 안경광학과)
  • Received : 2008.10.30
  • Accepted : 2008.12.09
  • Published : 2008.12.31
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Abstract

Purpose: Javals' rule is a commonly used formula for estimating total astigmatism from corneal astigmatism. Many researchers suggested a modication of Javals' rule. Therefore, we estimated the total astigmatism on the basis of measurements of corneal astigmatism and assessed the accuracy of Javals' rule. Methods: We estimated the total astigmatism on the basis of measurements of corneal astigmatism on 108 eyes of 54 subjects of koreans in their twenties. Results: The regression of the total astigmatism from corneal astigmatism is less than 1.25 of Javals' rule, but it was equivalent to Auger's modified Javals' rule. Conclusions: The regression equation for this study was as follows: Total Astigmatism=0.79 (Corneal Astigmatism)-0.49D${\times}$90.

목적: Javal's rule은 각막난시로부터 전난시량을 예측해 내는 공식으로써 일반적으로 이용되어져 왔다. 또한 많은 연구자들이 Javal's rule에 대한 수정을 거듭해 왔다. 이에 본 연구는 각막난시를 측정하여 전난시량을 예측해 봄으로써 Javal's rule의 정확성을 평가했다. 방법: 한국인 20대 54명의 108안을 대상으로 각막난시를 측정하여 전난시량을 예측했다. 결과: 각막난시에 의한 전난시량의 회귀계수가 Javal's rule의 굴절계수인 1.25보다 더 적게 나왔으나 Auger 등이 수정한 Javals' rule과는 일치하였다. 결론: 연구의 결과로 얻어진 회귀계수 방정식은 다음과 같다.: Total astigmatism=0.79 (corneal astigmatism)-0.49D${\times}$90.

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