I don't use glasses in the field primarily because of the hassle when they get wet. As far as contact care goes, I wear gas permeables (hard lenses) so the care might be considerably less than what you are used to. In a bugout situation I would not worry about cleaning or soaking them. I've slept overnight with them stuffed between my upper lip and gum like a plug of chewing tobacco, and as long as I didn't accidently chew them up they worked just fine <img src="/images/graemlins/grin.gif" alt="" />

Regards, Vince