After cataract surgery, the routine is to order eye drops for 1 month, if the time of ordering is too short, there will be a risk of wound infection, but not the longer the time of ordering eye drops, the better, because most of the eye drops contain preservatives, and also have a certain degree of toxicity to the cornea, the process of long instead of damage to the cornea function. Currently, cataract surgery is performed by ultrasonic emulsification cataract aspiration, plus IOL implantation. This surgery is very common, belongs to minimally invasive surgery, in the postoperative period of one month, the routine is to point with the following three types of eye drops: 1, antibiotic eye drops, such as clinical commonly used levofloxacin eye drops, gatifloxacin eye drops, etc.; 2, hormone eye drops, such as commonly used Prednisolone, the name of the commodity is called Bailite eye drops; 3, non-steroidal eye drops, such as sodium bromfenac, diclofenac sodium eye drops, such as bromfenac sodium, diclofenac sodium, etc. These three kinds of eye drops as a routine, each patient should be used. For the elderly, or preoperative examination of dry eye patients, or diabetic patients. These three types of patients, due to the patient’s own corneal condition is relatively poor, after the operation is prone to wound grinding pain, tearing feeling. For this category of patients, in addition to the three types of eye drops mentioned above, and the use of artificial tears eye drops, such as Hailu, but also the use of nutritional corneal eye drops, such as calf’s blood to remove protein extract eye drops. It is recommended that patients must follow the doctor’s instructions, use eye drops on time and in accordance with the amount, and come to the hospital regularly for review.