Imagine if you could have bionic eyes that gave you a display overlaid over your vision. You could see information about things that you were looking at, just like the Terminator. It sure would make life more interesting, wouldn't it? Too bad it's all a fantasy.
Or is it? Researchers have developed bionic contact lenses that contain tiny electric circuits and LEDs that would allow for just such a display to be possible. You could have a personal heads-up display giving you info at all times, or video game makers could create totally immersive worlds that you view right through your own eyes. The lenses are currently still being worked on, so don't expect to see them anytime soon, but the technology is there. It's only a matter of time.