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About
The purpose of this study is making use of school policy- recess outside classroom (ROC7-11) for increasing the time spent outdoor during recess and encouraging children spent time outdoor up to 11 hours in each week to investigate the vision change, myopia onset and progression in these schoolchildren.
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
All the students in Grade 1
Exclusion criteria
No
Primary purpose
Allocation
Interventional model
Masking
1,020 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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