Here’s a trick question for you: Which part of your opponent’s face is a threat to you?
No matter whether you are fighting or sparring, no matter which martial art you train in, whether you are unarmed or armed to the teeth, when you are engaging an opponent your attention should be on his or her center mass. The techniques that can hurt you will all originate from the center mass of your opponent’s body — kicks, punches, elbow and knee strikes, sweeps or throws.
My old Taekwondo instructor used to say that, in a real fight, the scariest feature of many people who are prone to attack you is their eyes. Some people just have crazy eyes — and he ran a narcotics rehabilitation program in Harlem in the late sixties, so he knew what he was talking about. The eyes are the window to the evil in their souls. Looking into the eyes of these types of people can paralyze you with fright. So don’t.
Focus on the point where the attack will originate, which coincidentally is an ideal target for your attack. Then attack while avoiding his. Then repeat, until the threat is gone.