Xiang, Fan; He, Mingguang; Morgan, Ian
Objective: To examine annual changes in refraction and ocular components around the onset of myopia in Chinese children. Design: Longitudinal study. Participants: Twins aged 7 to 15 years in 2006 from the Guangzhou Twin Registry. Methods: Participants underwent eye examinations annually from 2006 to 2010. Years were defined (+1 or -1) relative to the examination at which the onset of myopia was first identified. Main Outcome Measures: Annual change in spherical equivalent refraction (SER) and...[Show more]
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