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.
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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
4,000
Letter Chart Accomodative Rock Training for 2 minutes each time
Letter Chart Accomodative Rock Training for 2 minutes each time
Tiajin Eye Hospital
Tianjin, Tianjin Municipality, China
The rate of new-onset myopia
The number of new children with myopia was counted
Time frame: Through study completion, an average of 1 year
The changes of refractive error
The changes of refractive error between visit time and baseline which was obtained with a computer refractometer.
Time frame: Every 6 months, up to 3 years
The changes of axial length
The axial length was measured by a biological measuring instrument.
Time frame: Every 6 months, up to 3 years
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