Poor eyesight requires standardized treatment for specific causes. On this basis, eating fish, animal liver, carrots and other foods can help vision health, but it is important to achieve balanced nutrition. Some studies have confirmed that malnutrition can cause vitamin and trace element deficiencies, resulting in nutritional disorders, thus affecting the normal development and physiological function of the visual system. Therefore, it is recommended to properly consume fish, animal liver, eggs, fresh milk, carrots, dark-colored vegetables, dark-colored fruits and other foods rich in vitamin A, as well as zinc, calcium, iron, selenium and other trace elements. These vitamins and trace elements have an important relationship with the synthesis of photoreceptors in the visual cells, the synthesis of certain important enzymes in the complex of retina and choroid in the eye tissue, and the maintenance of night vision. It should be noted, however, that food is not a substitute for treatment. On the basis of dietary intervention, it is also necessary to pay attention to the development of correct eye habits; the emergence of blurred vision and other discomforts, it is recommended to go to the hospital in a timely manner.