I don't know, but I guess so. I think that people who are very good at detecting liars by bodylanguage look at the eyes (and other things of course). But I'm not sure. I know that you can tell if a smile is false by looking at the wrinkles by the eyes though.
I think that another reason for wearing them is they are annoying. I like to play a bit of poker and I think I would be annoyed by not being able to see the other players eyes, just like I would be annoyed by people wearing sun glasses inside when there's no reason for it.



