Eating foods such as cod liver oil, corn, and carrots are good for eyesight. Cod liver oil is good for the eyes and is rich in vitamin A. Vitamin A is very helpful for visual function. If you are deficient in vitamin A, it may lead to diseases such as dry eyes and night blindness. Corn is rich in lutein and zeaxanthin, which protect the light-sensitive area of the macula in the eye and remove harmful light from the eye. Carrots are particularly rich in carotenoids, which are known to protect vision and maintain healthy skin. In addition to the above foods, there are many other foods that are more effective in brightening the eyes. It should be noted that food or nutritional supplements can not treat eye diseases, if you have eye discomfort, you should promptly go to the hospital. Normally, you should pay attention to the rational use of eyes, regular work and rest, balanced diet.