Would this be useful for augmented-reality headsets?
In reality some lens(es) take the screen's light and bend it so that the angles of the light rays correspond to the light of a screen at that comfortable distance, but your eyes can't tell, just like they can't tell that the things are actually smaller when you look through a good pair of binoculars.
However you'd have to keep in mind that others looking at your face could see the same image. So don't go running that "X-RAY:make them appear naked!" app...
Also, I don't want the creepy Xray app.
But porn has this way of working into society/technology so I don't doubt for a second some form of that app will exist if it doesn't already.