In general, the first action of someone who is too vain to wear glasses is to simply not wear the glasses, not replace them with contacts. I know people who were vain about wearing them, and that's how they acted.
I'm starting to think it would be nice if a nice ghost lady would give me a tug while i'm in the head to take some of the edge off the brick I'm shitting out. Or a guy ghost would work.
I got used to putting in gas permeable contacts when I still wore corrective lenses, but it was kind of dangerous because I was still in the field and dust could cause a whole lot of irritation. Last five or so years I almost completely stopped wearing contacts.