Cataract preoperative care mainly includes two aspects: 1, to maintain the local cleanliness of the eye, you can use saline for conjunctival sac rinsing and tear duct rinsing, through which to find out whether there is conjunctivitis, keratitis, dacryocystitis and other active inflammation, which are contraindications to the operation and can not be surgically treated; 2, the routine use of antibiotic eye drops, to prevent the occurrence of local infections, the most commonly used medications are generally zoloft hydrochloride The most commonly used drug is usually levofloxacin hydrochloride eye drops. Generally about 3 days before the operation, you should start routine eye drops, 3-4 times / day, which can make the conjunctival sac in a sterile state, can maximize the avoidance of postoperative infection. In addition, in the period before the operation, we must pay attention to reasonable eye habits, avoid excessive eye use, and prevent the appearance of eye fatigue, which can easily have an adverse effect on the postoperative recovery as well as the surgical process.