I think this is from the movie Rockie right? He is saying because his eye has swollen from internal bleeding. This is making it difficult for him to see. So he wants his friend "Mick" to make an incision to release the blood. This will ease the swelling and allow him to see properly.

I am understand now, Thanks :)

Rocky: "I can't see nothin, you gotta open my eye. Cut me Mick. " Mick: "I don't wanna do it." Rocky: "Go ahead, cut me." Rocky tells Mick to cut his eye to relieve the swelling so that he can see .