Trials / Unknown
UnknownNCT04161326
Environmental Health and Myopia Prevention and Control
Environmental Health and Myopia Prevention and Control: A Longitudinal Study in China
- Status
- Unknown
- Phase
- —
- Study type
- Observational
- Enrollment
- 100,000 (estimated)
- Sponsor
- Sun Yat-sen University · Academic / Other
- Sex
- All
- Age
- 6 Years – 9 Years
- Healthy volunteers
- Accepted
Summary
Myopia is one of the major causes of low visual acuity during childhood. It is generally more prevalent in urban areas than in rural areas. Current evidence does not address our understanding of the myopia incidence and development and associated risk geographic factors, such as green spaces. Therefore, our study aimed to evaluate the association between geographic factors and myopia base on a population-based large-scaled cohort design.
Conditions
Timeline
- Start date
- 2016-01-01
- Primary completion
- 2019-12-30
- Completion
- 2021-12-30
- First posted
- 2019-11-13
- Last updated
- 2020-02-25
Locations
1 site across 1 country: China
Source: ClinicalTrials.gov record NCT04161326. Inclusion in this directory is not an endorsement.