Friday, November 21, 2014

How Does Outside Activity Affect Myopia? The Question of a New Study

“Despite what many parents may think, kids who spend a lot of time reading or squinting at tiny electronic screens aren't more likely to become nearsighted than kids who don't. However, that risk is only reduced if the child spends plenty of quality time outside,” says Science Daily. “The ‘outdoor effect’ on nearsightedness, or myopia, is a longstanding observation backed by both scientific and anecdotal evidence. It's so compelling that some nations in Asia, which have among the highest myopia rates in the world, have increased the amount of daily outdoor time for children in the hopes of reducing the need for glasses…’Data suggest that a child who is genetically predisposed to myopia are three times less likely to need glasses if they spend more than 14 hours a week outdoors,’ says optometrist Donald Mutti, OD, PhD, of The Ohio State University College of Optometry. ‘But we don't really know what makes outdoor time so special. If we knew, we could change how we approach myopia.’ Supported by a pilot grant from Ohio State's Center for Clinical and Translational Science (CCTS), Mutti is now focusing his research on the variables he feels have the most potential: invisible ultraviolet B rays (UVB) and vitamin D, and visible bright light and dopamine.” Read more.

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