| Analysis on Transitional Change of Refractive Error Distributions in Pediatric Population Using KNHANES. |
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Soo Hyun Lim, Hyun Taek Lim, Dae Hee Kim |
1Department of Ophthalmology, Kim's Eye Hospital, Konyang University College of Medicine, Seoul, Korea. skdh17@hanmail.net
2Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. |
| 국민건강영양조사 자료를 이용한 소아 굴절이상 분포의 추이 변화 분석 |
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임수현1 · 임현택2 · 김대희1 |
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건양대학교 의과대학 김안과병원 안과학교실1, 울산대학교 의과대학 서울아산병원 안과학교실2 |
Correspondence:
Dae Hee Kim,
Email: skdh17@hanmail.net
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Received: 7 June 2019 • Revised: 19 July 2019 • Accepted: 6 December 2019 |
| Abstract |
PURPOSE
To investigate transitional changes in refractive error distributions in a pediatric population using the Korean National Health and Nutrition Examination Survey (KNHANES) data. METHODS: We investigated 7,181 subjects from the 4th and 5th (2008–2012) KNHANES and 1,225 subjects from the 7th (2016) KNHANES; all subjects were 5 to 18 years of age. We used the average spherical equivalent (SE) of both eyes calculated with noncycloplegic refractive errors measured via autorefractor. We determined SE percentiles by age in order from hyperopia to myopia. We acquired the mean SE by age. We investigated the proportions of subjects with mild, moderate, and severe refractive errors by age. RESULTS: Mean refractive errors were −1.73 ± 2.16 diopters in subjects in the 4th and 5th KNHANES and −1.66 ± 2.21 diopters in subjects in the 7th KNHANES; these were not significantly different between the two groups (p = 0.071). Mean refractive errors were more myopic in subjects in the 4th and 5th than in subjects in the 7th KNHANES only at 8 and 9 years of age (p = 0.018, p = 0.026). The distribution of percentiles by age was similar between the two groups. The respective proportions of hyperopia, emmetropia, and myopia were 6.2%, 27.6%, and 66.2% in subjects in the 4th and 5th survey, and 7.3%, 29.7% and 63.0% in subjects in the 7th survey. There was no significant difference in refractive error proportion between the 2 groups (p = 0.326). CONCLUSIONS: There was no definite transitional change of refractive error distributions between the two KNHANES groups. However, additional periodic surveys are needed to confirm this hypothesis. |
| Key Words:
Childhood;KNHANES;Myopia;Prevalence;Refractive error |
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