Sleep floating was in the show. Off the top of my head I can think of two instances. The first is in Foundling (S1). The other time is in Just Say Noah (S3).

As for the eyeglasses - that just seems like common sense to me. Why else would someone with Clark's perfect eyesight choose to wear glasses? Especially since, in the L&C universe, his alter-ego came after his use of optometry? wink I know I've seen it plenty of stories and have used it myself at least once.

Lois: You know, I have a funny feeling that you didn't tell me your biggest secret.

Clark: Well, just to put your little mind at ease, Lois, you're right.
Ides of Metropolis