Light Exposure and Physical Activity in Myopic and Emmetropic Children.

Light Exposure and Physical Activity in Myopic and Emmetropic Children.

Read SA, Collins MJ, Vincent SJ.
Optom Vis Sci. 2014 Jan 9. 

This study measured ambient light exposure and physical activity of 102 children, 10 to 15 years old over a 2-week period, using a measuring device worn on the wrist.  The device registered much less light exposure and time spent in bright light conditions among myopic children, and no significant difference in daily physical activity between myopic and emmetropic (not myopic) children.  Other studies have also found that myopic children seem to spend less time in natural sunlight and bright light conditions.

Link to abstract:
http://www.ncbi.nlm.nih.gov/pubmed/24413273