"Lot's visitors blinded them" or "they took away their sight." The phrase "struck them" is a [[rc://en/ta/man/translate/figs-metaphor]] that does not involve physical hitting.
## both young and old ##
"men of all ages." This could also be translated as "both small and great" and indicate social standing rather than age.
## so that they wore themselves out trying to find the door ##
"so that they got tired of trying to find the door"