Spending time outdoors good for kids' eyes

[Celebration]

http://uk.reuters.com/article/healthNews/idUKCOL16619720080811

Parents now have another reason to shoo their kids outdoors to play, along with making sure they get enough fresh air and exercise. In a study, Australian researchers found evidence that children who spent the most time outdoors were the least likely to suffer from myopia, also called nearsightedness or shortsightedness

"Our evidence suggests that the key factor is being outdoors, and that it does not matter if that time is spent in having a picnic or in playing sport," Dr. Kathryn A. Rose told Reuters Health. "Both will protect a child's eyes from growing excessively, which is the major cause of myopia."

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Time spent outside had no significant relationship to myopia prevalence among the younger children, nor did the amount of close work they did.

But among the 12-year-olds, those who spent more than 2.8 hours outside every day were less likely to be myopic than their peers who spent more of their time indoors. Children who spent less than 1.6 hours outdoors every day and more than 3.1 hours in near-work activity had double to triple the likelihood of being nearsighted compared to kids who spent the most time outside and the least time in close-up work.

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"We have not yet established why being outside is protective," Rose said. "But a likely candidate is the high levels of light experienced outside compared to inside. Studies in animals suggest that retinal dopamine is released in response to light, and dopamine is known to be able to block eye growth." Myopia is caused when the eyeball grows too long.

[NV Whino]

1. Spending time outdoors

is good for kids period. What ever happened to recess and Phys Ed?