Allergic conjunctivitis, often caused by exposure to medications or other antigens, is mainly manifested by strange itching of the eyes. Treatment: 1. Allergens should be identified and re-exposure should be avoided. 2. Topical glucocorticoid drops should be used to spot the eyes, such as tobramycin dexamethasone drops and prednisolone drops. 3. Non-steroidal anti-inflammatory drugs, such as pralofene drops, should be given. 4. stabilizers and compound preparations, such as imipramine fumarate eye drops, sodium cromoglycate eye drops, and olopatadine eye drops.5, Severe patients can also be treated with oral loratadine tablets.