myopia
Conditions
Interventions
Interventional Group:less time of near work
Interventional Group:more time of outdoor exercise
Interventional Group:less time for electronic products
Control Group:no
Sponsors
Capital Institute of Pediatrics
Eligibility
Sex/Gender
All
Age
6 Years to 13 Years
Inclusion criteria
Inclusion criteria: For analysis of influencing factors, we choose students of grade one to grade six in the selected primary schools. For interventional study, we choose students of grade two and grade three in the selected primary schools.
Exclusion criteria
Exclusion criteria: Students with eye diseases that decrease their vision acuity except myopia
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| vision acuity;Diopte; | — |
Countries
China
Contacts
Public ContactGong Yue-Qiu
Outcome results
None listed