Emmetropia
Conditions
Interventions
High school:NA
Kindergarten:NA
Upper primary school:NA
Lower primary school:NA
Junior high school:NA
Sponsors
West China Hospital of Sichuan University
Eligibility
Sex/Gender
All
Age
3 Years to 18 Years
Inclusion criteria
Inclusion criteria: All children in the junior kindergarten, first grade, fourth grade, seventh grade, and the first year of high school will be invited to participate in this study.
Exclusion criteria
Exclusion criteria: Children who are unable to cooperate with the examination, as well as those who will move to other places with their parents in the next year, will be excluded. Non - resident visitors, guests, temporarily absent children, children in boarding schools, and those accommodated by social welfare institutions (such as special schools for people with disabilities) will also be excluded.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual acuity;Refraction;Axial length; | — |
Countries
China
Contacts
Public ContactLongqian Liu
West China Hospital of Sichuan University
Outcome results
None listed