| Analysis of Myopic Progression in Childhood Using the Korea National Health and Nutrition Examination Survey. |
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Seung Il Jung, Jisang Han, Ji Won Kwon, Do Gyun Kim, Dae Hee Kim, Hyun Taek Lim |
1Department of Ophthalmology, Myongji Hospital, Seonam University College of Medicine, Goyang, Korea. skdh17@hanmail.net
2Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. |
| 국민건강영양조사(2008-2012) 자료를 이용한 소아의 근시 진행 경향에 대한 분석 |
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정승일1⋅한지상1⋅권지원1⋅김도균1⋅김대희1⋅임현택2 |
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서남대학교 의과대학 명지병원 안과학교실1, 울산대학교 의과대학 서울아산병원 안과학교실2 |
Correspondence:
Dae Hee Kim,
Email: skdh17@hanmail.net
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Received: 9 June 2016 • Revised: 24 June 2016 • Accepted: 22 August 2016 |
| Abstract |
PURPOSE
To investigate the degree, distribution, and change in refractive error in the pediatric population 5 to 20 years of age. METHODS: We collected data from 7,695 subjects aged 5 to 20 years who participated in the Korean National Health and Nutrition Examination Survey from 2008 to 2012. Non-cycloplegic refractive error was measured using an autorefractor. Mean spherical equivalent calculated from the measured refractive error data in both eyes was used. The subjects were categorized into mild, moderate, or high refractive abnormality or emmetropia according to the degree of refractive error. The degree and distribution of refractive error in all subjects and age-matched subjects were analyzed. The change in refractive error was analyzed according to age. RESULTS: Mean refractive error of the study subjects was -1.82 diopters. As subject age increased, myopia increased from +0.04 diopters at 5 years of age to -2.88 diopters at 20 years of age. Myopia was observed in 66.2% of subjects and accounted for only 18.5% of the 5-year-old subjects, but increased to 84.3% in the 20-year-old subjects. The rate among all study subjects was -0.19 diopters per year. The greatest myopic progression rate (-0.46 diopters per year) among all age groups was in subjects 7 to 9 years of age. Myopic progression continued until 16 years of age. CONCLUSIONS: The ratio of pediatric myopia subjects between 5 and 20 years of age was high in Korea. The rate of myopic progression was the fastest in subjects 7 to 9 years of age. After 16 years of age, myopic change paused. |
| Key Words:
Childhood;Korea National Health and Nutrition Examination Survey (KNHANES);Myopia;Myopic progression;Refractive error |
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