This condition is usually seen in filiform keratitis, which is characterized by a foreign body sensation, photophobia, and tearing in the eyes. The cause of this condition is usually due to long-term use of corneal contact lenses or unreasonable use of glucocorticoids. Therefore, it is important to avoid these causes for the treatment of this condition, such as not wearing corneal contact lenses for a long period of time and not using medications unreasonably. If filaments cause obvious foreign body sensation, the filaments can be removed under surface anesthesia and antibiotic eye ointment can be applied, and normalcy can be gradually restored in about 24 hours. In addition, if the symptoms of eye dryness are obvious, you can also use artificial tears to relieve the symptoms, such as sodium vitrate drops.