No, there is not very much possibility that a muzzle flash could blind your eyes. It is indeed kind of flashing when a muzzle is launched. But as long as you do not always stare at the muzzle flashes, your eyes will not even be harmed. It is sometimes dazzling after you see the muzzle flash, if so, you can close your eyes and lie on your back to have a break. Or you can apply some anti-fatigue eye drops to your eyes to reduce the discomfort in your eyes. And rest asured that it will not blind your eyes anyway.
