God pls help me.........

I actually have a dog, its name was Casper. He use to be a cute puppy of mine but now i really don't know what happened to his left eye, now his left eye was red and difficult to open to him. I really love Casper very much, i can't live without him or neither my family. now my mind is like so unconcious and i cant do anything keep on thinking of that. I swear that i would do anything for my dog to be heal back to normal.