Diclofenac sodium eye drops are not used one at a time; their dosage varies depending on the need, with a dosage of 1 drop 4 to 6 times a day. The drug is a non-steroidal anti-inflammatory drug that inhibits the enzyme cyclooxygenase, with anti-inflammatory and analgesic effects, and can be used to treat eye diseases such as keratitis, uveitis, scleritis, and spring conjunctivitis; it can also be used for preventive and therapeutic preoperative and postoperative analgesia and anti-inflammatory effects in a wide range of ocular surgeries. Stinging, burning sensation and tearing of the eyes may occur after the use of the drug, and there may also be weakness, nausea, drowsiness, blurred vision, conjunctival congestion and other adverse reactions. The drug may cause new-onset hypertension or aggravate pre-existing hypertension, so patients with hypertension should have their blood pressure closely monitored when using the drug. Do not use other non-steroidal anti-inflammatory drugs during the use of the drug. It is contraindicated in the following conditions: hypersensitivity to the drug or other NSAIDs, patients with severe heart failure, patients with a history of gastrointestinal bleeding or perforation after the application of NSAIDs, perioperative period of coronary artery bypass grafting surgery, and patients with previous or active peptic ulcers/bleeding. If you need to use the medication, please take the medication under the guidance of a doctor in strict compliance with the doctor’s instructions, and do not use the medication arbitrarily on your own.