Yes, the cod liver oil is good for the eyes. Cod liver oil contains the main component of vitamin A and vitamin D. The vitamin A's role is to improve visual development and the vitamin D is used to promote the absorption of calcium. The main function of the cod liver oil is that it can be used for night blindness, keratitis, osteomalacia, vitamin A D deficiency, malnutrition and disease recovery. The vitamin A main function is to maintain the normal growth, reproductive visual epithelial tissue and anti-infective immunity function. The lack of vitamin A can cause pediatric bone retardation, influence tooth enamel cell development, the unsound tooth, damage the epithelial tissue structure and so on. Thus, increasing the liver oil is very good for the eyes.