Would you have survived in the middle ages?

Shamus asks Would you have survived in the middle ages?

I've actually considered this before. My main handicap would be my short-sightedness, but I can't think of anything to date which might have been life threatening enough to kill me had modern medicine not been there. Although I do wonder how people managed with short-sightedness before they invented glasses. Just bumped into things a lot, I guess, which might mean I'd have had a fatal accident by falling onto a trebuchet or something.