If one of the legs bends just about a millimetre I can't use them anymore. The cilinders need to be positioned exactly right in terms of the spin, and also in terms of how they're centered before the eyes... :(
I've my old glasses but they're no use - it takes your eyes about a half a year to get used to new cilinders, they say. And at least a week to be able to see through them. "Of course I'm paranoid, everyone's trying to kill me."
- Weyoun, "Treachery, Faith and the Great River"