Easy fix...when someone lands and illegal blow that causes a cut like that...ref dqs fighter that threw the blow. Dont put it in the fighters hands. For one they could have a concussion, could be on cloud 12, who knows. When it's a gas on your forehead that will bleed into your eyes, you honestly shouldnt continue.
I remember when big nog and Fedor clashed heads and Fedor was cut open. The judges called it a nc. It was never asked of a fighter to make a decision on their ability to continue. It was not a intentional blow..thus the nc. When the blow is intentional..and has an effect on a fighter like this..should instantly be a dq. Intentional=dq. Accidental..nc. pretty simple.
Why would a fighter ever continue if they were gashed open and bleeding all over...the only reason is peer pressure to be a man. Diego is right about how it looks in the judges eyes. Recently, when skyscraper got talked into continuing by the ref, after repeated nut shots...that was total bs. Should have been a dq. If they dont crack down on it and make it known it's not ok...it will always get abused. A knee to the head...is illegal. The ref cant decide if it was a really hard blow, or glancing blow without replay on most occasions. Replay means fight is over.
