Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Changes in Corneal and Internal Astigmatism with Age

연령에 따른 각막난시와 내부난시의 변화

  • Lee, Hyun (Dept. of Optometry, Daejeon Health Sciences College) ;
  • Kim, Jung-Hyun (Dept. of Preventive Medicine, College of Medicine, Chungbuk National University) ;
  • Lee, Sung-Bok (Dept. of Ophthalmology, School of Medicine, Chungnam National University) ;
  • Eom, Jeong-Hee (Dept. of Optometry, Masan University) ;
  • Rhee, Kang-Oh (Dept. of Optometry, Daejeon Health Sciences College) ;
  • Lee, Tae-Yong (Dept. of Preventive Medicine, School of Medicine, Chungnam National University)
  • 이현 (대전보건대학교 안경광학과) ;
  • 김정현 (충북대학교 의과대학 예방의학교실) ;
  • 이성복 (충남대학교 의과대학 안과학교실) ;
  • 엄정희 (마산대학교 안경광학과) ;
  • 이강오 (대전보건대학교 안경광학과) ;
  • 이태용 (충남대학교 의학전문대학원 예방의학교실)
  • Received : 2013.07.15
  • Accepted : 2013.08.07
  • Published : 2013.08.31
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Abstract

The purpose of present study was to determine the frequency of RA with age and to investigate the age-related trends and changing-factors in RA, CA and IAs. The refractive power of the eye and the power of corneal anterior surface were measured with auto-refractor among 1,017 inhabitants aged 5 to 59 years in Cheongju in July 2010. The overall frequency of RA was 22.7%, and frequency of RA increased from 8.9% in 5~9 years age group to 36.8% in 20~29 years age group. It then dipped to 19.2% in 40~49 years age group but increased again 28.6% in 50~59 years age group. $J_{45}$ components for RA, CA, and IAs were fairly stable in different age groups, the changes in $J_0$ components for both RA and CA appeared to be decreased after age of 30 years. In addition, the refractive power on the vertical direction was changed slightly with age, but the refractive power on the horizontal direction was changed significantly with age. It was expected that the change in the frequency of astigmatism with age was due to the change in the refractive power of horizontal meridian.

본 연구의 목적은 연령별 난시빈도를 알아보고 굴절난시와 각막난시, 내부난시의 연령에 따른 변화와 변화요인을 알아보고자 하였다. 2010년 7월에 만5~59세의 청주지역 거주자 1,017명을 대상으로 굴절력과 각막전면굴절력을 자동굴절검사기로 측정하였다. 난시빈도는 전체적으로 22.7%이었고, 5~9세에 8.9%에서 20대에 36.8%로 증가하였다. 40대에는 19.2%로 감소하였다가 50대에 28.6%로 다시 증가하였다. 굴절난시와 각막난시, 내부난시의 $J_{45}$성분은 연령군에 상관없이 거의 일정하였으나 굴절난시와 각막난시의 J0성분은 30대 이후 감소하는 경향성을 보였다. 또한 $J_0$성분 중에서 수직방향 굴절력은 연령에 따라 변화가 없이 일정하였지만 수평방향 굴절력은 연령에 따라 큰 변화가 있었다. 연령에 따른 난시빈도의 변화는 수평방향 굴절력의 변화에 기인하는 것으로 판단된다.

Keywords

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