i hate my 3DS somehow. but even with all this hate towards this system, i never had problems with my eyes at all.
I guess it might be troubling for your eyes if you turn 3D on for several hours, but playing games and watching TV extensively does the same with your eyes.
(of course this is case sensitive, some people might really be having trouble playing 3DS for more than just a few minutes, but those examples of peoples heads and eyes getting gangraped exist for any kind of screen and/or activity)









