A Comparative Study on Visual Health and Physical Activity of Chinese and Japanese Children Aged 6-12 Years

Abstract

Objectives: In this study, we compare the visual acuity levels and physical activity participation of Chinese and Japanese children. Methods: We collected data on static visual acuity, kinetic visual acuity, axial length, intensity, frequency, duration, amount, and physical activity items of 431 children aged 6-12 years from Chinese and Japanese schools in the same city. Our analysis examined the relationships involving age, visual function indicators, ocular biometric parameters, and extracurricular physical activity. Results: We found the myopia rate higher in Chinese children than in Japanese children, increasing with age except in grade 4; kinetic visual acuity in Chinese children was lower than in Japanese children (p