Eye irritation may lead to conjunctivitis, dry eye, keratitis and other diseases, patients need to clarify the cause of the disease under the guidance of a professional doctor to treat the symptoms. 1. Conjunctivitis: When the patient’s eyes are stimulated by a variety of external pathogenic microorganisms, there may be increased secretion, eye foreign body sensation, eye itching and other symptoms of conjunctivitis, may be accompanied by photophobia and other phenomena. For the treatment of conjunctivitis, we should pay attention to the timely discharge of eye secretions, and appropriate use of acyclovir, levofloxacin and other antiviral drugs for treatment. 2. Dry eye: When the external environment is too dry or when patients wear contact lenses for a long time, dry eye may occur, making patients show dryness, foreign body sensation, photophobia and other symptoms. The treatment of dry eyes requires the appropriate use of artificial tears to moisten the eyes, and the use of surgery to rebuild the eyelids according to the condition. 3. Keratitis: Keratitis occurs when external pathogenic bacteria irritate the patient’s cornea, causing the patient to experience eye pain, blepharospasm, photophobia and tearing. For the treatment of keratitis generally choose to use penicillin, chloramphenicol and other eye drops to do antibacterial treatment, the use of artificial tears to treat the dry phenomenon. If the eye is irritated, it is recommended to go to the hospital, do not do it yourself.