The Initiating Factors of Myopia Among Primary and Secondary School Students in Tianjin

Recruiting

• Conditions: Myopia; Refractive Error

• Registration Number: NCT05637827
• Lead Sponsor: Tianjin Eye Hospital

Brief Summary

There was a prospective cohort observational study. Forty hyperopic children, 40 myopic children and 120 emmetropia children were randomly selected from grade 1 to grade 3, and were followed up every six months for 3 years. All patients received cycloplegic refraction examination, ocular biological test, binocular visual function test and a questionnaire related to daily eye habits. A multi-level and multi-dimensional data analysis model was constructed to explore the possible factors affecting the occurrence and development of myopia in children.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-11-01
• Status Verified: 2022-11
• Study First Submitted: 2022-11-26
• Study First Submitted QC: 2022-11-26
• Last Update Submitted: 2022-11-26
• Study First Posted: 2022-12-05
• Last Update Posted: 2022-12-05
• Primary Completion: 2024-12-31
• Study Completion: 2024-12-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

• students in grades 1-3
• Can cooperate with the examination of students

Exclusion Criteria

• Obvious strabismus and amblyopia
• Eye diseases that affect vision, such as congenital cataracts, glaucoma, and retinal diseases
• History of ocular surgery

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The changes of refractive error	Every 6 months for a period 3 years	The changes of refractive error between visit time in every 6 months
The changes of axial length	Every 6 months for a period 3 years	The changes of axial length between visit time in every 6 months.

Trial Locations

Locations (1)

Tianjin Eye Hospital; 🇨🇳 Tianjin, Tianjin, China