The Monitoring and Intervention of Refractive Changes in Children and Teenagers in Tianjin
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Myopia
- Sponsor
- Tianjin Eye Hospital
- Enrollment
- 4000
- Locations
- 1
- Primary Endpoint
- The changes of axial length
- Status
- Active, not recruiting
- Last Updated
- last year
Overview
Brief Summary
The study aimed to collect multi-factor information on school-age children with pre-clinical myopia, and to identify the initial factors and warning signs of myopia.
Detailed Description
The incidence of myopia is high in China. At present, the mechanism of myopia is unclear, and the main theories are genetic and environmental aspects. Many factors may affect the occurrence and development of myopia in students, such as ocular biological parameters, peripheral refractive state, differences in binocular vision function, eye habits, and outdoor time. In this study, the multi-factor information on pre-clinical myopia in school-age children was collected to find out the initial factors and warning signals of myopia.
Investigators
Eligibility Criteria
Inclusion Criteria
- •All students in grades 1 to 4
- •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
Outcomes
Primary Outcomes
The changes of axial length
Time Frame: Every 6 months, up to 3 years
The axial length was measured by a biological measuring instrument.
The rate of new-onset myopia
Time Frame: Through study completion, an average of 1 year
The number of new children with myopia was counted
The changes of refractive error
Time Frame: Every 6 months, up to 3 years
The changes of refractive error between visit time and baseline which was obtained with a computer refractometer.