DangerDog wrote on Jan 7, 2014, 20:43: But can they do anything about causing your vision to go all wonky after using it a short while, people report of needing up to a half hour to return to normal after using it a short time.
If you're talking about the feeling ill part, that apparently has to do with the latency between head movement and the image appearing on the screen. Even if you can't consciously perceive the lag, the brain still does unconsciously. The sweet spot is around 30ms. They are aiming from between 15ms and 20ms as the final target.