After cataract surgery, the recovery time of vision varies according to each individual. Some patients can recover their vision very well on the second day after surgery, while others may take 7 to 10 days or even longer for their vision to recover better. Cataract surgery is a very common surgical procedure in ophthalmology, and the most commonly used surgical procedure is cataract ultrasonic emulsification with IOL implantation. The recovery of vision is relatively quick, but it varies from person to person. If the patient’s eye is in good condition, the corneal endothelial cell count is normal, and the clouding of the lens is not severe, it is possible that the patient’s vision will return the day after the surgery. If the patient’s preoperative corneal endothelial cell count is significantly lower than normal, or if the cataract is severe, the recovery of vision will take longer, possibly 7 to 10 days or even longer after surgery. After the operation, we should follow the doctor’s instructions for medication and good care, and if any obvious discomfort symptoms occur, it is recommended to consult the doctor in time for review.