Slashdot linked up this BBCNews article detailing the latest in commercial display technology:
US firm Microvision has developed a system that projects lasers onto the retina, allowing users to view images on top of their normal field of vision.
Already in use at some Honda dealerships, apparently it results in a 40% time savings for their mechanics, who no longer need to look up diagnostic info or manual procedures. Of course, it's expensive right now, but that will change.
Apparently this tech has been in use a long time in the military. It seems this is the technology that makes the monocle used by Apache helicopter gunners work. I'd not heard that before, makes me think it was classified for awhile.