Comment Re:Not practical as contact lenses (Score 1) 99
Infrared essentially blocks out normal vision. While this may be useful as wearable computing, it wouldn't be useful if you had to poke around in your eye every time you needed to switch back to normal vision.
You are missing the point. (And must not need bifocals!)
It would be useful if I could put one IR-capable contact lens in one eye, while having a regular lens in the other eye. This would be fantastic for driving at night, or hunting those pesky pack rats that live in my backyard.
Many people who need bifocals use a different lens in each eye for distance and reading. Some also get laser-corrected to this state. Most peoples' brains are able to successfully merge the different images, but some are not. (So it is better to try it with contacts before lasik!!!)