The Monitoring and Intervention of Refractive Changes in Children and Teenagers in Tianjin
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 4,000
- 试验地点
- 1
- 主要终点
- The changes of axial length
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 5 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •All students in grades 1 to 4
- •Can cooperate with the examination of students
排除标准
- •Obvious strabismus and amblyopia
- •Eye diseases that affect vision, such as congenital cataracts, glaucoma, and retinal diseases
- •History of ocular surgery
结局指标
主要结局
The changes of axial length
时间窗: Every 6 months, up to 3 years
The axial length was measured by a biological measuring instrument.
The rate of new-onset myopia
时间窗: Through study completion, an average of 1 year
The number of new children with myopia was counted
The changes of refractive error
时间窗: Every 6 months, up to 3 years
The changes of refractive error between visit time and baseline which was obtained with a computer refractometer.
次要结局
未报告次要终点