Trial of Myopia Prevention Using +3D Lenses
Not Applicable
- Conditions
- Myopia
- Interventions
- Device: +3D Lenses
- Registration Number
- NCT00627874
- Lead Sponsor
- Sun Yat-sen University
- Brief Summary
The purpose of this study is to assess whether a short-term imposed myopic defocus is effective in preventing the development and progression of juvenile-onset myopia in Chinese children.
- Detailed Description
1. To determine if +3D lenses wearing for half an hour everyday prevents the development and progression of myopia in school children.
2. To identify ocular parameters and risk factors at baseline associated with development and progression of myopia.
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 1200
Inclusion Criteria
- All children in the selected class are enrolled
Exclusion Criteria
- Hyperopia > +2.0 D
- High myopia > -6.0 D
- Astigmatism> 1.5 D
- Anisometropia > 1.5 D
- Strabismus and amblyopia
- Any ocular, systemic, or neurodevelopmental conditions that could influence refractive development
- Chronic medication use that might affect myopia progression or visual acuity
- Already receiving other treatment for progressing myopia
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description 1 +3D Lenses wear +3D glasses for 30 minutes per day and engage in activities which require vision at more than 1m
- Primary Outcome Measures
Name Time Method Axial Length of eyes Annual
- Secondary Outcome Measures
Name Time Method Autorefraction Annual