Filamentous keratitis can only be completely eradicated by treating the cause of the disease, which includes: removing the undesirable causative factors, removing the filaments, and applying topical eye drops. 1. Remove undesirable causative factors: If the patient has a history of wearing corneal contact lenses, it is recommended to avoid wearing them. If the patient has a history of inappropriate medication use, it is necessary to correct the medication use under the guidance of the physician in a timely manner. If the patient has a history of prolonged eye wrapping, it should be removed in a timely manner. If it is caused by dry eye, should actively treat dry eye. 2. Removal of filaments: filaments can be removed completely with a sterile cotton swab under surface anesthesia. 3. Topical ophthalmic drops: antibiotic ophthalmic drugs, such as levofloxacin eye drops and ofloxacin ophthalmic ointment, can be applied to the conjunctival sac to prevent secondary infections. You can also follow the doctor’s instructions to apply the calf’s blood to protein extract ophthalmic gel and other nutritional corneal drugs, in order to promote the repair. The occurrence of filamentous keratitis suggests that the patient seek medical treatment in a timely manner. Drugs should be used in strict accordance with the doctor’s instructions to avoid adverse consequences.