Oh, Ellie, I'm sorry you're having unexpected problems but wearing glasses is not the worst thing. I, as you may remember, wear them. Mine are progressive bifocals; this last pair was $800 - about $550 were the lenses alone (and I don't have a very strong prescription at all). I know there are much cheaper ones, but experience has shown this not to be the best course of action, at least for me. I'd rather pay more for much better quality. I hope the knot clears up well!