The purpose of this study is to assess whether outdoor activities are effective in preventing the development and progression of juvenile-onset myopia in Chinese children.
1. To determine if increased engagement in outdoor activities reduces the development and progression of myopia in Chinese school children. 2. To identify the risk factors associated with the development and progression of juvenile-onset myopia. 3. To characterize the interaction between refractive error and education.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
2,000
Adding 1 hour outdoor time into school curricula
Zhongshan Ophthalmic Center
Guangzhou, Guangdong, China
Cycloplegic refraction
Time frame: 1 year
Visual acuity
Time frame: 6 months
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