Bear's rival did what he could, with his face swollen, tired and the damage done to him he tried, it was clear that his tactics were crazy but he tried. He launched into the attack like a madman throwing punches left and right but anyone would say that he wanted to get caught.
And that's what happened, Bear immobilized him with his arms, knocking him down was only a matter of seconds, but that injured boy called Cascabel is what he was looking for, after a violent headbutt he managed to free one of his hands, he didn't try to hit Bear in the face, he went straight for his eye.
While the public screamed the boy's finger was forced into Bear's left eye, he didn't take it out as Bear threw it quickly to the ground, but he had blinded him, it was clear that at least that finger had torn his rival's cornea. This is what Blacker had referred to in these desperate situations when the fights would become dirtier by the rivals with less chances of winning.