He's gonna be just fine. "Drunky pig" is totally normal after anesthetic. I used to call Sly my little drunken sailor after one of his dental procedures.
The biggest thing is if he eats on his own. If he's eating anything on his own, try not to worry too much. Obviously you should monitor him and I KNOW you will. It may take a day or two for the disorientation from the anesthetic to wear off fully.
I don't know if he had any sight left in that eye beforehand, but if he did you can expect some sort of disorientation for a little while from that as well as he gets used to it.