With no handheld screen to look down into, Google Glass wearers will be walking around like blind men, staring off into a void of their own.  "Glassy-eyed stare" will have a more literal meaning in the near future.

BTW,  here's a fascinating peek into Google's senior level exec meetings from Eric Schmidt - most of this digital elite can't make eye contact with each other.

Curt Woodward senior editor at  Xconomy writes:

During Schmidt's decade as Google CEO, before co-founder Larry Page took the helm, there was a standing rule for one senior-executive meeting: No computers, no smartphones, and talk to each other face-to-face for one hour per week.

It was so hard to resist the pull of the Web, though, that Schmidt had to walk around the meeting room and look for people hiding their phones under the table, dispensing fines to the offenders.

"Even one hour per week, you couldn't have a civilized conversation. So when Larry replaced me, he gave up. And now I sit in the meeting, typing away like everybody else, with no eye contact. So, if you like eye contact, I'm sorry--you lost," he said to laughs.

 Schmidt: Google Glass Critics "Afraid of Change," Society Will Adapt | Xconomy

Please see: Old age is the killer app for Google Glass | ZDNet