Painful blinking at the corner of the eye can be caused by impingement, granuloma, or a foreign body in the eye. 1. Inverted eyelashes: Inverted eyelashes patients because of the abnormal growth of eyelashes, patients in the process of blinking eyelashes involved in or piercing the eyeball, will irritate the eye tissues, so the corner of the corner of the eye when blinking the performance of pain. 2. Eyelids: Eyelids are red, swollen, congested, burning, painful and other discomforts because of suppurative symptoms in the eyelid glands. When the patient blinks, the eyelid abscess rubs or touches the eyeball, which may cause eye pain and discomfort. 3. Ocular foreign body: patients with ocular foreign body, such as eyelid foreign body piercing, when blinking, the foreign body can stimulate the eye tissue, thus the symptoms of eye pain. It is recommended that patients who experience eye pain when blinking should seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.