Longitudinal association between myopia and parental myopia and outdoor time among students in Wenzhou: a 2.5-year longitudinal cohort study.

ABSTRACT:

Background

To evaluate the impact of parental myopia and outdoor time on myopia among students in Wenzhou.

Methods

We examined 1388 primary students from first grade to third grade in Wenzhou from September 2012 to March 2015. We performed noncycloplegic refractometry on each student every six months and axial length (AL) measurements every year. At the commencement of our study, children were asked to complete a questionnaire regarding near work activity and outdoor activity, whereas parents were asked to complete a self-administered questionnaire regarding their background circumstances and their history of myopia.

Results

A total of 1294 students (93.2%) returned for follow-up examinations. Children with initial and final no myopia spent more time on outdoor activi

SUBMITTER: Jiang D 

PROVIDER: S-EPMC7789164 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature