Allergic conjunctivitis patients have many symptoms, common symptoms include eye itching, foreign body sensation, tearing, conjunctival congestion, photophobia and so on. Allergic conjunctivitis is mostly caused by allergic reaction of the patient’s conjunctival tissues stimulated by allergens such as pollen, dust, dust mites, etc. The patient may experience symptoms such as itchy eyes, conjunctival congestion, tearing, photophobia, and increase in secretion, etc. Usually both eyes are involved, and the patient’s discomfort can be relieved after moving away from the allergens. Itchy eyes are a common symptom of allergic conjunctivitis, and patients may also experience frequent eye rubbing and blinking, and severe allergic conjunctivitis patients may also experience vision loss. It is recommended that patients with allergic conjunctivitis consult a doctor to evaluate their condition and follow the doctor’s instructions for standardized treatment.