Really big or really thick glasses.
Represents Nerd culture.
Hate it.
They don't need to be that big. It is Nerd Culture, but I guess you're in medical school. Typical.
Kids have always worn cheap and ugly glasses. Their glasses have to be cheap, because the kids lose them, or break them or grow out of them too often so they must be replaced.
Millenials are now "adults". They buy expensive designer glasses. This answer is not correct. -10 points.