If I know dogs of his stature, his eyes will close when he barks, and therefore, you will be safe.
(Trust me. I'm a mother.)
He does have bangs and that helps protect his eyes, but even during the last storm in California he was threatened by a half inch run off of water from the massive misting we were having.
He is a good guard dog, but is at risk outside his element, which to this point I have figured to be indoors eating meatball off of a toasted roll.