Patients with dry, itchy eyes and other discomforts may be caused by dry eye, allergic conjunctivitis, blepharitis and so on. 1. Dry eye: dry eye is a common ophthalmic disease, patients due to insufficient tear secretion or evaporation caused by excessive tear film instability or damage to the ocular surface, patients may appear dry eyes, foreign body sensation and other discomfort. 2. Allergic conjunctivitis: when allergic patients are exposed to pollen, hair and other allergens, they may develop allergic conjunctivitis, which may cause itchy eyes, increased secretion and other uncomfortable symptoms, which are often recurrent, and the symptoms can be relieved after the patients are detached from the allergens. 3. Blepharitis: Blepharitis is a chronic inflammatory lesion of the eyelid margin, under the stimulation of inflammation, patients may experience conjunctival congestion, itchy eyes, burning sensation and other uncomfortable symptoms. It is recommended that patients with dry, itchy eyes and other symptoms should seek medical attention to assess their condition and follow the doctor’s instructions for treatment.