does the Nintendo 3DS give bạn eye cancer

There's no such thing as eye cancer. It's called radiation cancer and that's from all electronics. It's hard to get radiation cancer. For bạn to get it you'd have to be on the computer/on your DS for extensive hours for several days straight. bạn have nothing to worry about.

What no, it doesn't give bạn eye cancer. They're perfectly safe.

And sure, 3D may affect your eyes after some time, but that's why you're supposed to take breaks. And bạn can always slide the 3D off if it's a problem.

Although, apparently my vision must be amazing since I can play on full 3D for about 4 hours (that is, if the battery doesn't die).

Not that I know of. I doubt it though xD

I have a 3DS and it hasn't được trao me any problems, also bạn can turn the 3D part off.

I doubt it. A bunch of people play on their 3DS and do not get eye cancer. Unless, of course, bạn play on it for several days straight, which I am sure, no reasonable person would do.

I don't think so! I'm pretty sure they wouldn't have been allowed to sell them if they did

I've had a 3DS for about a năm and I often use the 3D feature, and I don't have eye problems, it does make your eyes hurt after a while, but as far as I know, it doesn't give bạn eye cancer.