The itchy sensation in the corner of the eyes of patients may be caused by eye allergies, infectious conjunctivitis or impingement. 1. Eye allergy: When allergic patients come into contact with pollen, hair and other allergens, it can lead to eye allergy, resulting in itchy corners of the eyes, which can also be accompanied by dry eyes, tearing and other uncomfortable symptoms. 2. Infectious conjunctivitis: If the patient has infectious conjunctivitis, when the inflammation stimulation, the patient may appear photophobia, tearing, stinging pain and other symptoms, but also may appear in the corner of the eye itchy symptoms, accompanied by foreign body sensation in the eye, increased secretion, eye pain and other symptoms. 3. Inverted eyelashes: If the patient has the condition of inverted eyelashes, due to the stimulation of the eyelashes on the corner of the eye, the patient may also appear in the corner of the eye itching symptoms. It is recommended that patients with itchy eyes should consult a doctor to assess their condition and follow the doctor’s instructions for treatment.