Hey, doctor don't do cataract operation for both eyes at a time , The timing of surgery in the second eye certainly depends on individual circumstances. Because a period of blurry vision is normal following any eye surgery, you certainly want to be able to see adequately with the first eye before undergoing surgery on the opposite eye. It's done in OT ,Need to admit one day before and atleast one day rest is required after surgery ,consult opthalmologist