Sharpness and dryness of the eyes may be caused by visual fatigue, dry eye disease, blepharitis, etc. 1. Visual fatigue: This disease is mostly caused by eye discomfort due to overuse of eyes or other eye diseases, resulting in patients experiencing astringent and dry eyes, accompanied by symptoms such as eye swelling and pain, blurred vision, photophobia and tearing. 2. Dry eye: due to insufficient tear secretion, excessive evaporation or abnormal composition of tears, it will cause eye discomfort, astringent and dry eyes, as well as eye fatigue, foreign body sensation, soreness, eye pain, photophobia and other symptoms. 3. Blepharitis: mainly caused by Staphylococcus aureus, squamous lesions, blepharoplasty dysfunction, visual fatigue, etc., resulting in patients with astringent eyes, dry eyes, accompanied by increased secretion, stinging and other symptoms. It is recommended that patients go to regular hospitals in a timely manner, under the diagnosis of the doctor, according to the patient’s specific condition, to take targeted treatment.