The second issue, the eyestrain from trying to focus both eyes at different distances, is also one I overcame—more than 20 years ago! The trick is to arrange th

The second issue, the eyestrain from trying to focus both eyes at different distances, is also one I overcame—more than 20 years ago! The trick is to arrange things so that the eye behind the mirror can focus at any distance and still see the display clearly. Sounds like he has some great insights here. He's also known as 'the worlds first cyborg' (http://en.wikipedia.org/wiki/Steve_Mann http://en.wikipedia.org/wiki/Steve_Mann), and the lonely trail he seemed to be on is now shifting to the mainstream.