Children Must Play Outside to Help Decrease Risk of Myopia (Near-Sightedness) and Resulting Glaucoma, Retinal Holes, Tears, Retinal Detachment, Cataract (all increased with myopia) AND ESPECIALLY Loss of Meibomian Glands and Chronic Dry Eyes

Children Must Play Outside Daily at least 2 Hours a Day
to Help Decrease Risk of Myopia (Near-Sightedness) and Resulting Glaucoma, Retinal Holes, Tears, Retinal Detachment, Cataract (all increased with myopia) 
Loss of Meibomian Glands and Chronic Dry Eyes

Below demonstrates 
Original Investigation
September 15, 2015

Effect of Time Spent Outdoors at School on the Development of Myopia Among Children in ChinaA Randomized Clinical Trial

JAMA. 2015;314(11):1142-1148. doi:10.1001/jama.2015.10803

Importance  Myopia has reached epidemic levels in parts of East and Southeast Asia. However, there is no effective intervention to prevent the development of myopia.
Objective  To assess the efficacy of increasing time spent outdoors at school in preventing incident myopia.
Design, Setting, and Participants  Cluster randomized trial of children in grade 1 from 12 primary schools in Guangzhou, China, conducted between October 2010 and October 2013.
Interventions  For 6 intervention schools (n = 952 students), 1 additional 40-minute class of outdoor activities was added to each school day, and parents were encouraged to engage their children in outdoor activities after school hours, especially during weekends and holidays. Children and parents in the 6 control schools (n = 951 students) continued their usual pattern of activity.
Main Outcomes and Measures  The primary outcome measure was the 3-year cumulative incidence rate of myopia (defined using the Refractive Error Study in Children spherical equivalent refractive error standard of ≤−0.5 diopters [D]) among the students without established myopia at baseline. Secondary outcome measures were changes in spherical equivalent refraction and axial length among all students, analyzed using mixed linear models and intention-to-treat principles. Data from the right eyes were used for the analysis.
Results  There were 952 children in the intervention group and 951 in the control group with a mean (SD) age of 6.6 (0.34) years. The cumulative incidence rate of myopia was 30.4% in the intervention group (259 incident cases among 853 eligible participants) and 39.5% (287 incident cases among 726 eligible participants) in the control group (difference of −9.1% [95% CI, −14.1% to −4.1%]; P < .001). There was also a significant difference in the 3-year change in spherical equivalent refraction for the intervention group (−1.42 D) compared with the control group (−1.59 D) (difference of 0.17 D [95% CI, 0.01 to 0.33 D]; P = .04). Elongation of axial length was not significantly different between the intervention group (0.95 mm) and the control group (0.98 mm) (difference of −0.03 mm [95% CI, −0.07 to 0.003 mm]; P = .07).
Conclusions and Relevance  Among 6-year-old children in Guangzhou, China, the addition of 40 minutes of outdoor activity at school compared with usual activity resulted in a reduced incidence rate of myopia over the next 3 years. Further studies are needed to assess long-term follow-up of these children and the generalizability of these findings.


Doctors raise the alarm at steep rise in myopia among Hong Kong children

Government urged to take action after figures reveal a 10.5pc increase in youngsters with nearsightedness
PUBLISHED : Wednesday, 28 September, 2016, 8:01am
UPDATED : Wednesday, 26 October, 2016, 2:38pm

Ng Kang-chung

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