Yes. Anything that damages the eye has a potential to result in permanent blindness, this includes shrapnel from a blast. Eyes can also be burned with intense heat, damaged via chemical exposure.
Now… your character’s probably going to have some scaring on their face in addition to being blind, but it is quite possible.
perspi-looks said: Not to mention anything that causes a hit to the head, which means your brain can knock against your skull. Damage to the visual centers or optical nerves could happen that way, which may leave your character blind without much facial scarring.
Perpsi’s right, and I need coffee. Thank you for catching that.