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Nearsightedness skyrocketing all over the world--and the reason is probably not what you think

Severe myopia (nearsightedness) is on the rise among youth everywhere, and scientists think they know why. And it's likely not, as might seem obvious, from kids and teens staring at their phones. Dr. Joshua Hou of the department of opthalmology and visual neurosciences at the U of MN talked with Ann Possis recently about this epidemic and the leading theories about it.

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