Had an interesting question from a staff member today that was asked... "If my child wears 3D glasses all the time, can it harm their eyes?" Answer - No. 3D glasses are made with special lenses (polarized) to designed to present different images to the right and left eye. The 'splitting' effect only occurs in the very special environment of a movie theatre. Out in the real world 3D glasses only just act like slightly tinted glasses. Some effect (not 3D but screen blackening) may be seen from polarized lenses if you look at a LCD display. dr.j