Contacts...

Basically I wear glasses, its a pretty weak prescription so its no biggey if maniac reaches over and breaks them inflight. I was wondering though if contact lenses are suitable or flying? I would also tend to think that future passengers would feel more comfortable with a pilot with a more natural vision look. Mostly my question is about the phisics of the things, you know I want to make sure they wont like eject at low preasure.