Itchy eyes are usually caused by allergic conjunctivitis, allergic blepharitis and blepharitis. Allergic conjunctivitis is usually caused by an allergic reaction of the conjunctival tissues of the eyes triggered by contact with allergens such as willow flakes and pollen suspended in the air, and can be treated by ordering anti-allergic eye drops, such as Olopatadine Hydrochloride Eye Drops, Azelastine Hydrochloride Eye Drops, and so on. Allergic blepharitis is related to eye skin contact with cosmetics, skin care products, hair dyes and other allergens, and can be treated by applying hormonal eye ointment, such as tobramycin dexamethasone ophthalmic ointment. Blepharitis is associated with chronic bacterial infections of the eyelid area and can be treated with antibiotic eye ointment, such as ofloxacin eye ointment and tobramycin eye ointment. Itchy eyes should be timely medical care, under the guidance of the doctor to determine the cause of the disease and standardized treatment.