What is the purpose of the blindfold? Are there some later game levels that have monsters that kill you when you look at them? Is it maybe used as training for when you actually get blind? Or is it just to be a badass and wear it all the time along with a ring of warning?
So far they have no use that I've seen. Mostly a joke sort of for the joker character. Also if you put on on for fun without identifying it, you could end up stuck with a cursed bkindfold, so possible hazzrd.