In Labyrinth Lord the light spell is one of a few causes of blindness. Blind characters take a -4 to hit penalty on attacks, but do not seem to take a hit to their AC. However, in the monster description for the giant shrew, when it is deafened (and therefore blinded), its AC drops from 4 to 8.
My question is to determine if the AC penalty really is supposed to be restricted to a single monster in this way or if there should be a -4 penalty to AC for being blind applied across the board? The second option seems to be the more realistic because it is harder to dodge something you cannot see.