The common causes of itchy eyes with discharge include granuloma, conjunctivitis, keratitis or trachoma. 1. Granuloma: mostly due to staphylococcal infection, patients will have symptoms such as itchy eyes and discharge, and in severe cases, pressure pain and lid conjunctival congestion may also occur. 2. Conjunctivitis: mostly due to bacterial infection or bad habits, patients are prone to conjunctival congestion, itchy eyes, discharge and other phenomena, sometimes accompanied by dry eyes, foreign body sensation and other symptoms. 3. Keratitis: a common eye disease, related to bacterial and fungal infections, patients will have symptoms such as itchy eyes, increased secretions, often accompanied by vision loss, photophobia and other phenomena. 4. trachoma: in the acute attack of trachoma, patients are prone to itchy eyes with increased secretions, and some patients will have conjunctival congestion, eye tearing and a series of adverse symptoms. There are other causes of itchy eye discharge, such as blepharitis, etc. You should consult a doctor in time to clarify the cause of the disease and actively treat it.