Itchy eyes in the elderly may be caused by dry eye, blepharitis, conjunctival dryness and other reasons. 1. Dry eye: Due to the lowering of the function of the lacrimal glands of the elderly, the tears cannot be evenly coated on the surface of the cornea and conjunctiva, which cannot moisturize the eyes and enhance the resistance of the eyes, leading to symptoms such as itchy eyes, dry eyes, and easy fatigue in the elderly. 2. Blepharitis: the elderly due to reduced body resistance or usually do not pay attention to eye hygiene, often rubbing the eyes will lead to blepharitis, clinical manifestations of itchy eyes, increased secretion, accompanied by a burning sensation, tingling sensation and other symptoms. 3. Conjunctival dryness: the elderly eye structure function degradation, tear secretion decrease, to the eye surface of the dust and other flushing effect, resulting in the emergence of dry eyes, eye fatigue, itchy, foreign body sensation and other symptoms. When found that the elderly eyes itchy situation, should go to the hospital in a timely manner, to identify the cause of treatment.