Nintendo World 2011 (3DS) Details

[Soleron]

bmmb1 said:

TWRoO said:

3D bad for kids under 6?

...

My guess is that this is similar to the Epilepsy warning for video games, it's a possuiblity they need to legally protect themselves against though the chances are probably not high.

This. There's no scientific evidence for an effect because no real study has been done... yet.