Quote:
Originally Posted by Ripplinger
After reading all the links and reading about this topic for many years, I'm really thinking the current decline in kids' vision is more to do with them not being outside as much. Your eye muscles are constantly being used to change focus... indoors how much distance are you changing, 20' at the most? That's not very much. But outdoors your muscles really get a better workout viewing objects miles away and not just the next wall.
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Which is what I said up above, with a bunch of cites. The distance hypothesis is the leading one at the moment, though it's far from proven. That doesn't mean that device use has absolutely nothing to do with any of it. There's a strong case to be made for ubiquitous devices leading to more kids staying inside more of the time, along with other pressures.