The patient’s right corner of the eye is swollen and painful when blinking, and it is considered to be related to blepharitis, conjunctivitis, eye trauma and other factors. 1. Blepharitis: if the patient does not pay attention to local hygiene and cleanliness, improper eye use, resulting in a certain amount of eye tissue stimulation, can lead to the patient to appear in the corner of the eye red, swollen, pain and other uncomfortable symptoms. 2. Conjunctivitis: If the patient’s conjunctival tissue is stimulated by inflammation, conjunctival congestion and swelling can occur, which in turn leads to swelling of the corner of the right eye and eye pain. 3. Ocular trauma: If the patient has ocular trauma such as bumping, impact, etc., eyelid redness, swelling, pain and other discomforts can occur, which may also be accompanied by subcutaneous bruising, and if the patient blinks, the eye pain can be aggravated. It is recommended that patients with swelling and pain in the corners of the eyes should consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment.