eyes 100% of the time ears 100% except when hunting. try this then think about it how far can you drive your car if your deaf ? now how far can you drive your car if your blind or see your kids,your wife,pet. all it takes is one case faileure and both eyes are gone in a instant . i am 61 and have had 3 case failures in those years .and yes i was wearing shooting glasses on all 3 occasions. those were all factory ammo too! shooting (safety) glasses are cheap insurance. rant off