Somehow the first thing that came to my mind is "contact lens low-light amplifiers" (e.g. for military use or driving vehicles at night). I'm not really sure th

Somehow the first thing that came to my mind is "contact lens low-light amplifiers" (e.g. for military use or driving vehicles at night). I'm not really sure this would be at all possible, but I find the idea much more intriguing than contact lens HUDs.