I've thought long and hard about wheter this is the appropriate section for this question, because I guess it's kind of an interdisciplinary subject.
My understanding of stereopsis (please, correct me if I'm wrong), basically depends of the way we cross our eyes when we attempt to see objects at different distances. The more "our eyes are crossed", the greater the difference between the images we receive in each eye, which it's more effective to look at closer objects. In order for an object to be in focus, it needs to be at the point where the vision of the eyes intersect (including "at infinity" for very far away objects).
Now, with this mindset, how would such a gadget as Oculus VR work? It consists of two separate screens (one for each eye) attached directly on an helmet-like device strapped to the user's head. It is capable of convincing 3D representations and has similar features which make it of close interest for gaming and similar applications.
So, my question is: in order to deliver such an illusion of depth, do the users' eyes need to be focused at the screen's distance, or at the represented objects' distance?
Sorry for the long question :P
Thanks in advance!