Postoperative reactions such as corneal edema and fundus edema may occur after cataract surgery, and most patients will be able to subside within 3 days after surgery. Cataracts are most common in middle-aged and elderly people, and are usually caused by the aging phenomenon that leads to clouding of the lens inside the eyeball. Cataracts can also be caused by trauma to the eye or long-term use of hormone medication. Patients may experience a loss of vision, which usually requires surgery to improve vision. Edema of the cornea and fundus tissues may occur after surgery, which may be caused by postoperative inflammatory reaction. Generally speaking, the edema can subside naturally within 3 days after surgery, and hormonal eye drops can also be used to accelerate its recovery, for example, Prednisolone Acetate Eye Drops, Tobramycin Dexamethasone Eye Drops and so on can be used. The medication needs to be used according to the doctor’s prescription. Patients need to go to the hospital ophthalmology examination, to find out what the specific causes, and then only under the guidance of the doctor to take targeted treatment.