I think he only took them off once when he was on a double date with Hilary. Maybe the only time in the series

Jazz was one weird (but funny) dude. I don't think he took them off very much.

I only remember him taking them off once (and even then I can't remember what episode it was in) but yeah, I thought that was funny too. I always wondered why he wore them all the time...

he pulled open one of the lenses to reveal his eye, to get a better look at Hilary. she closed it back, lol. this was his first appearance in the second episode.

someone had a theory that he was actually blind. I like that it was his trademark.