July 2018
Volume 59, Issue 9
Free
ARVO Annual Meeting Abstract  |   July 2018
Refraction and Ocular Biometry of Preschool Children in Shanghai, China
Author Affiliations & Notes
  • Luoli Zhang
    Eye & ENT Hospital, Fudan University, Shanghai, China, Shanghai, China
  • Xiaomei Qu
    Eye & ENT Hospital, Fudan University, Shanghai, China, Shanghai, China
  • Xiangui He
    Department of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China
  • Bingjie Wang
    Eye & ENT Hospital, Fudan University, Shanghai, China, Shanghai, China
  • Xiaofang You
    Department of Maternal and Child Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
  • Huijing Shi
    Department of Maternal and Child Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
  • Haidong Zou
    Department of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China
  • Hui Tan
    Department of Maternal and Child Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, China
  • Jianfeng Zhu
    Department of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai Eye Hospital, Shanghai, China
  • Footnotes
    Commercial Relationships   Luoli Zhang, None; Xiaomei Qu, None; Xiangui He, None; Bingjie Wang, None; Xiaofang You, None; Huijing Shi, None; Haidong Zou, None; Hui Tan, None; Jianfeng Zhu, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 3375. doi:https://doi.org/
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      Luoli Zhang, Xiaomei Qu, Xiangui He, Bingjie Wang, Xiaofang You, Huijing Shi, Haidong Zou, Hui Tan, Jianfeng Zhu; Refraction and Ocular Biometry of Preschool Children in Shanghai, China. Invest. Ophthalmol. Vis. Sci. 2018;59(9):3375. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To investigate the refraction and ocular biometry characteristics and to examine the prevalence of refractive errors in preschool children aged 3 to 6 years in Shanghai, China.

Methods : A school-based cross-sectional study was conducted in Jiading and Xuhui District, Shanghai in 2013. We randomly selected 7 kindergartens in Jiading District and 10 kindergartens in Xuhui District, with a probability proportionate to size. A total of 4615 Chinese preschool children were included. The children underwent comprehensive eye examinations, including cycloplegic refraction and biometric measurements. Myopia, hyperopia, astigmatism were defined as SE ≤ -0.50D, SE ≥+2.00 D, and cylindrical diopters ≤ -1.00D

Results : The mean spherical equivalent (SE) for 3 to 6 year old children was +1.20 D (standard deviation [SD] 1.05), and the mean axial length (AL) was 22.29 mm (SD 0.73). The overall prevalence of myopia and astigmatism was 3.7% and 18.3%, respectively. No difference in prevalence of astigmatism was found across age groups. There was a statistically significant association between lower cylindrical diopters and higher spherical diopters (Spearman correlation: -0.21, P < 0.001).

Conclusions : Children aged 3 to 6 years in Jiading and Xuhui districts, Shanghai were mostly mildly hyperopic, with a low prevalence of myopia. Refractive astigmatism for children may be relatively stable throughout the preschool stage. Astigmatism was significantly associated with spherical refractive error.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

 

Bar graph showing age-specific distributions of the prevalence of refractive status in the right eyes.

Bar graph showing age-specific distributions of the prevalence of refractive status in the right eyes.

 

Distribution of children with astigmatism(≤-1.00D) and without astigmatism by classification of spherical power.

Distribution of children with astigmatism(≤-1.00D) and without astigmatism by classification of spherical power.

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