Vitamin A deficiency can cause dry eye. Inadequate intake of vitamin A in the diet due to chronic malnutrition or partiality can reduce tear production and impair the health of the epithelial cells on the surface of the eye, resulting in corneal desiccation, which can manifest as dry eyes. If left untreated, it can also lead to vitamin A deficiency night blindness and corneal softening. Treatment can be done by taking oral vitamin A capsules for vitamin supplementation and rapid relief. After treatment, you must pay attention to the balanced intake of vitamins and nutrients in your diet, and eat more carrots, animal liver and other foods rich in vitamin A, so that you will not be prone to the symptoms of dry eyes. During the treatment period, you can also order artificial tear drops to replenish the moisture in the eyes and temporarily relieve the symptoms, such as sodium vitrate eye drops.