Refractive Error in Chinese Students
Refractive Error in Chinese Primary and High School Students Before and Amidst COVID-19 in Tianjin
1 other identifier
observational
36,452
1 country
1
Brief Summary
This cohort study aimed to assess the change of refractive status in Chinese school children.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Jan 2018
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
January 1, 2018
CompletedFirst Submitted
Initial submission to the registry
November 1, 2021
CompletedFirst Posted
Study publicly available on registry
November 15, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
December 31, 2021
CompletedNovember 15, 2021
November 1, 2021
4 years
November 1, 2021
November 11, 2021
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
refractive error
The changes in refractive error were compared by generalized estimation equation.
change from baseline at 36 months
sex disparity
The changes in refractive error were compared between different sex
change from baseline at 36 months
Study Arms (1)
Grade
The changes in myopia rate in 3 years were compared by generalized estimation equation in different grades
Interventions
This cohort study aimed to assess the change of refractive status in Chinese school children under different outdoor time
Eligibility Criteria
This large-scale cohort study was conducted in 36452 schoolchildren on myopia development among schoolchildren in 96 elementary and high schools in 16 districts of Tianjin in China.
You may qualify if:
- no concurrent eye disease
- age from 6 to 18 years old
You may not qualify if:
- 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.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Tianjin Eye Hospital
Tianjin, 300020, China
Related Publications (3)
Saw SM, Matsumura S, Hoang QV. Prevention and Management of Myopia and Myopic Pathology. Invest Ophthalmol Vis Sci. 2019 Feb 1;60(2):488-499. doi: 10.1167/iovs.18-25221.
PMID: 30707221BACKGROUNDWang J, Li Y, Musch DC, Wei N, Qi X, Ding G, Li X, Li J, Song L, Zhang Y, Ning Y, Zeng X, Hua N, Li S, Qian X. Progression of Myopia in School-Aged Children After COVID-19 Home Confinement. JAMA Ophthalmol. 2021 Mar 1;139(3):293-300. doi: 10.1001/jamaophthalmol.2020.6239.
PMID: 33443542BACKGROUNDWang W, Zhu L, Zheng S, Ji Y, Xiang Y, Lv B, Xiong L, Li Z, Yi S, Huang H, Zhang L, Liu F, Wan W, Hu K. Survey on the Progression of Myopia in Children and Adolescents in Chongqing During COVID-19 Pandemic. Front Public Health. 2021 Apr 28;9:646770. doi: 10.3389/fpubh.2021.646770. eCollection 2021.
PMID: 33996724BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY CHAIR
Yan Wang, director
Tianjin Eye Hospital
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- RETROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 1, 2021
First Posted
November 15, 2021
Study Start
January 1, 2018
Primary Completion
December 31, 2021
Study Completion
December 31, 2021
Last Updated
November 15, 2021
Record last verified: 2021-11