Suggest Treatment For Loss Of Vision And Involuntary Movement Of Eye Balls

Hello sir, my father, age 53, was having Kala pani and I think motiabind..he has undergone with ecce and iol surgery ....now he has lost vision of right eye and control too..as his eye rotates without control ... Is there any possibility to get the vision or it needs eye replacement... And how much expenditure will be there ...