Earlier quoted context omitted.
There is not a fixed focal distance in VR. The screens are an inch in front of your eye, but the objects you look at can be (virtually) at any distance. It’s like normal vision. The question of the effect on vision of shining screens into your eyes for hours at a time still stands. Edit: whoops, guess I was wrong about that!
I don't believe this to be true - don't you need a light field for this to be possible? i.e. what magic leap was doing?
I am not a physicist by any means, and I am not sure what a "light field" exactly is in terms of engineering, but as a everyday skeptic I am generally rather wary of anything Magic Leap puts out.