The Beijing Childhood Eye Study

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ENROLLING_BY_INVITATION

Total Enrollment

3760 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-01-01

Study Completion Date

2025-09-01

Brief Summary

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Axial myopia has emerged as the leading cause of irreversible vision loss in East Asia, driven by its progression to sight-threatening complications including myopic macular degeneration, retinal detachment, open-angle glaucoma, and other complications. In the current study, we aim to observe the natural course of the development , progression, and its associated factors in children

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Detailed Description

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This is a prospective epidemiological cohort study, recruiting students in grades 1-3 in primary school for myopia. Through stratified cluster random sampling, among aii the primary schools in Dongcheng District, Beijing, schools were stratified into key and ordinary schools, with 2 schools randomly selected from each stratum.

A prospective study cohort comprising 3,667 subjects was established. All study subjects completed a standard questionnaire and underwent routine ophthalmic examinations. Follow-up assessments will be conducted regularly to monitor changes in refractive errors and fundus indicators. Informed consent, approved by the Ethics Committee of Beijing Tongren Hospital, was obtained from all participants.

Conditions

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Myopia

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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grades 1-3 students

Currently enrolled students in grades 1-3 of the selected primary schools, in good health, with normal ocular appearance. All enrolled students have no ocular diseases, no strabismus, ocular trauma, or history of intraocular surgery, with unaided visual acuity of 20/20 or better. Parents consent to participate in the survey and sign informed consent form.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

Inclusion Criteria: 1) Currently enrolled students in grades 1-3 of the selected primary schools, in good health, with normal ocular appearance. 2) No ocular diseases, no strabismus, ocular trauma, or history of intraocular surgery, with unaided visual acuity of 20/20 or better. 3) Parental and student consent to participate in the survey and signed informed consent form.

Exclusion Criteria: 1) Not currently enrolled in grades 1-3 of a primary school. 2) Students with pre-existing strabismus, other ocular diseases, or a history of ocular surgery at baseline, or those allergic to cycloplegic eyedrops. 3) Students unable to continue studying at their current school for more than three years from the baseline, including those who transfer to another school or withdraw from the study; 4) parental or student disagreement with participation in the survey.

Minimum Eligible Age

6 Years

Maximum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes