The application of augmented reality using contact lenses and other types of head up displays was explored in the wonderful science fiction novel "Rainbows End", which was written by none other than "Vernor Vinge".
I get the impression that would be me in that future, worried about what was real or not, or how many false memories I'd be recalling because of something that was shown to me. I'm probably just being paranoid, but so was this character and if I recall correctly, it worked out for him in the end.
Thoroughly recommend getting hold of the third episode of the British SciFi show Black Mirror.
It features something roughly like Google Glass, plus Reddit Karma acting like BitCoins and like XP in World of Warcraft.