According to a survey conducted between December 2018 to March 2019, approximately **** percent of surveyed high school students in China had unven vision problems in their eyes (aka anisometropia). The problem was more prevalent and serious among younger students. About *** percent of primary school students had a vision difference in power of over *** diopters - the highest among students from other school levels.
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CCA. (May 15, 2019). Distribution of children and adolescents with uneven visions in eyes in China from December 2018 to March 2019, by diopter and education level [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved August 03, 2026, from /statistics/1180174/china-share-of-students-with-uneven-vision-limitations-by-diopter-and-education-level/
CCA. "Distribution of children and adolescents with uneven visions in eyes in China from December 2018 to March 2019, by diopter and education level." Chart. May 15, 2019. ÌÇÐÄÆƽâ°æ. Accessed August 03, 2026. /statistics/1180174/china-share-of-students-with-uneven-vision-limitations-by-diopter-and-education-level/
CCA. (2019). Distribution of children and adolescents with uneven visions in eyes in China from December 2018 to March 2019, by diopter and education level. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: August 03, 2026. /statistics/1180174/china-share-of-students-with-uneven-vision-limitations-by-diopter-and-education-level/
CCA. "Distribution of Children and Adolescents with Uneven Visions in Eyes in China from December 2018 to March 2019, by Diopter and Education Level." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 15 May 2019, /statistics/1180174/china-share-of-students-with-uneven-vision-limitations-by-diopter-and-education-level/
CCA, Distribution of children and adolescents with uneven visions in eyes in China from December 2018 to March 2019, by diopter and education level ÌÇÐÄÆƽâ°æ, /statistics/1180174/china-share-of-students-with-uneven-vision-limitations-by-diopter-and-education-level/ (last visited August 03, 2026)
Distribution of children and adolescents with uneven visions in eyes in China from December 2018 to March 2019, by diopter and education level [Graph], CCA, May 15, 2019. [Online]. Available: /statistics/1180174/china-share-of-students-with-uneven-vision-limitations-by-diopter-and-education-level/
