Maybe the fact that more children are wearing glasses is because there eyes are getting bad at an early age playing all those video games, on the computer, and watching TV all the time!
I know when I was a kid waaaayy back when we didn't have all that stuff and the TV only came on at night and we only watched it for an hour or two before bed (except Saturday mornings when we watched cartoons). We were always outside playing with our buddies.