Bear bile eye drops in the clinic is a kind of proprietary Chinese medicine, according to the instructions for use of the drug, the drug has the role of clearing heat and detoxification, anti-inflammatory and anti-itching and so on. Bear bile eye drops are mainly used for the treatment of acute and chronic cicatricial conjunctivitis, with significant anti-inflammatory effect, can be antiviral, anti-bacterial, etc., can play a role in analgesia and rapid relief of itching. These drugs are used externally as eye drops, and internal use is prohibited. Moreover, after using eye drops, patients may experience adverse reactions such as eye itching, eyelid skin swelling and flushing. It is prohibited for those who are allergic to the product and should be used with caution for those with allergies. It is recommended that patients use bear bile eye drops under the guidance of a physician, no unauthorized use, to avoid adverse reactions.