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Comment & Response
February 23, 2016

School-Based Myopia Prevention Effort

Author Affiliations
  • 1Poostchi Eye Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

Copyright 2016 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.

JAMA. 2016;315(8):819-820. doi:10.1001/jama.2015.17139

To the Editor In their study on 6-year-old primary school children, Dr He and colleagues1 evaluated the effect of adding 40 extra minutes of outdoor activities to each school day on the 3-year cumulative incidence of myopia. The results showed that the cumulative incidence of myopia was 30.4% in the intervention group and 39.5% in the control group (P < .001).

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