J Korean Ophthalmol Soc > Volume 59(4); 2018 > Article
Journal of the Korean Ophthalmological Society 2018;59(4):369-375.
DOI: https://doi.org/10.3341/jkos.2018.59.4.369    Published online April 15, 2018.
Long-term Changes in the Spherical Equivalent and Axial Length in Bilateral High-hyperopia Children.
Sue Hey Chae, Sun A Kim
Sungmo Eye Hospital, Busan, Korea. sunei2@naver.com
두눈 고도원시 환아에서 연령에 따른 안축장과 원시 정도의 장기간의 변화 관찰
채수혜⋅김선아
성모안과병원
Correspondence:  Sun A Kim,
Email: sunei2@naver.com
Received: 23 November 2017   • Revised: 4 January 2018   • Accepted: 2 April 2018
Abstract
PURPOSE
To explore changes in the spherical equivalent refractive error and axial length of both eyes of children with high hyperopia over time. METHODS: Children with bilateral hyperopia ≥ 4.0 diopters (D) underwent visual acuity testing and comprehensive ophthalmic examinations. The mean age at the first visit was 6.5 years and spherical equivalent refractive error and axial length were measured at least three times over the following year. Axial length was measured using an intraocular lens Master instrument (Carl Zeiss Meditec, Jena, Germany). RESULTS: The mean annual increase in axial length was +0.21 mm and the mean annual reduction in spherical equivalent refractive error was −0.39 D. Between the ages of 3 and 5 years, the mean annual increase in axial length was +0.36 ± 0.26 mm. In patients aged ≥ 9 years old, the mean annual increase was +0.12 ± 0.09 mm (p = 0.00). The mean annual reduction in spherical equivalent refractive error was −0.53 ± 1.00 D between the ages of 3 and 5 years, but became −.32 ± 0.54 D at age ≥ 9 years old. This difference was not significant (p = 0.11). CONCLUSIONS: In children with bilateral hyperopia, the spherical equivalent refractive error decreased and the axial length increased with age. The rate of axial length growth was higher in younger children.
Key Words: Ambylopia;Axial length growth rate;Hyperopia;Intraocular lens (IOL) Master;Refractive error


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