Protective measures are needed after cataract surgery, such as wearing an eye patch or getting gauze. The gauze can be removed first thing the next morning, so the surgery is very quick and the recovery is very fast. Cataract surgery is minimally invasive and has evolved from larger incisions, such as a 4-5mm incision, to a 1.8mm micro-incision with very little damage. Nowadays, the micro-incision ultrasonic emulsification method only leaves a tiny 1.8mm incision at the cornea, the time used for the surgery is very short, the damage to the intraocular tissues will be much smaller, the recovery is very fast, and there is no need for special post-balloon anesthesia. Many patients can undergo the surgery through surface anesthesia, which is a procedure that begins when the surface of the eye is anesthetized with a few drops of local anesthetic medication, so that the patient recovers quickly. To protect the eye tissue after surgery, you can apply eye ointment in and cover it with gauze, which can be removed by early the next morning. In some places, it is even possible to wear an eye mask without a gauze cover. The purpose of the eye mask is to protect the cornea and eyeball from external collisions and extrusion. After all, there will still be small incisions after the operation, and it is very dangerous if the patient is not careful to touch or even squeeze after the operation, causing the incision to leak. At this point, there is a possibility of infection, causing endophthalmitis, which is the most serious complication of cataract.