Dryness of the left eye and small black spots in the middle-aged people are usually caused by dry eye and vitreous clouding. Dry eye is one of the ophthalmic diseases that often appear in middle-aged and elderly people, usually because with age, the conjunctival cup cells, lid glands and other secretory functions gradually decline, resulting in reduced tear secretion, the patient will be due to the lack of lubrication of the eye surface of the tears, and the emergence of dry eyes, foreign body sensation, etc., the patient can be used to treat the artificial tears drops, such as sodium vitrate eye drops. The manifestation of small black spots in front of the eyes of patients is usually caused by vitreous clouding. Once the originally transparent vitreous tissue appears to be clouded with dots, it will cast a shadow on the retina, which leads to the appearance of small black dots floating in the patient’s field of vision. It is recommended that patients with dry eyes and small black dots seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.