Why stunning? There are other obvious changes over the same period, like the the rise in obesity and diabetes. Why not more myopia too?
What it means is that myopia is at least partially (and the data suggests largely) not genetic but due to lifestyle. Just like obesity and diabetes.
We can speculate that it is because we never go outdoors anymore, because we look at ipads and computer screens all day, but it remains speculation at this point.
Yeah, I suppose you could call it speculation, but it sounds like the most likely suspect to me. Got any other ideas that fit the data?
Things that don't get used enough, they tend to atrophy.
I would also guess that time spent reading books is just as likely to contribute to myopia as looking at a computer screen. I think it's the distance from your eyes that matters, not what you are looking at.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.