I'm thinking Taka will lose either this fight or soon, and that'll be ippo's motive to return to the ring. Also, i think he's hiding a detached retina. The shots where people's eyes are flowing with fighting spirit or whatever, he occasionally only has the one.
I also think so. Takamura has his own share of good lucks. We can say that he's very lucky himself.
Also, I think it will go something like this. Eventhough his luck "loses" this time, it will triumph at the last moment in the ring because of the good deed he did to the child.