Myopia
Conditions
Keywords
COVID-19, Refractive error, China, Myopia
Brief summary
This cohort study aimed to assess the change of refractive status in Chinese school children.
Detailed description
A cohort study was conducted in 96 primary and secondary schools in 16 districts of Tianjin from 2018 to 2020, including about 36452 people totally. The changes in myopia rate in 3 years were compared by a generalized estimation equation. The distribution of average equivalent spherical mirror and different regions and grades was evaluated by linear regression analysis, and the correlation between the equivalent spherical mirror and different gender, nationality, and age was evaluated.
Interventions
OTHERoutdoor time
This cohort study aimed to assess the change of refractive status in Chinese school children under different outdoor time
Sponsors
Tianjin Eye Hospital
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
6 Years to 18 Years
Healthy volunteers
Yes
Inclusion criteria
* no concurrent eye disease * age from 6 to 18 years old
Exclusion criteria
* significant systemic illnesses * ocular conditions * congenital corneal diseases * pterygium, keratoconus * corneal degeneration or dystrophy * media opacity, uveitis, glaucoma * history of ocular surgery * neurologic diseases * retinal disease.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| sex disparity | change from baseline at 36 months | The changes in refractive error were compared between different sex |
| refractive error | change from baseline at 36 months | The changes in refractive error were compared by generalized estimation equation. |
Countries
China
Contacts
Primary ContactYan Wang, director
Outcome results
None listed