vitamin A

When vitamin A is deficient, the adaptability of eyes to dark environment decreases, and it is easy to suffer from night blindness in severe cases. Recommended food: all kinds of animal livers, cod liver oil, milk and eggs, as well as plant foods, such as carrots, amaranth, spinach, leeks, green peppers, red sweet potatoes and oranges, apricots and persimmons in fruits.

docosahexenoic acid

Pregnant women should eat more foods rich in DHA, which is one of the main components of cells and cell membranes and contributes to the healthy development of fetal vision. The DHA content per100g of fish can reach more than1000mg. Recommended food: fish. The fish with high DHA content include tuna, bonito, salmon, mackerel, sardine, bamboo pod fish, swordfish, tuna, yellow croaker, saury, eel, hairtail and crucian carp. Algae; Fish oil DHA products

α -linolenic acid

α -linolenic acid can be converted into DHA in human body. If pregnant women or newborns lack α -linolenic acid, the DHA content in neonatal retinal phospholipids will be reduced by half, and the gray matter of the brain will be reduced by 1/4, and the vision of newborns will be obviously weakened. The World Health Organization recommends that pregnant women should supplement 1000 mg of α -linolenic acid in addition to their normal diet every day. Recommended food: dried fruits: such as nuts, walnuts, almonds, peanuts, sesame seeds, etc.

vitamin C

Vitamin c is one of the components of the lens of the eye. If you lack vitamin C, you are prone to cataract and lens opacity. Recommended food: all kinds of fresh fruits and vegetables, especially green peppers, cucumbers, cauliflower, Chinese cabbage, fresh dates, pears and oranges.

calcium (Ca)

Studies have found that babies born to pregnant women with calcium deficiency are three times more likely to suffer from myopia in adolescence than those born to pregnant women without calcium deficiency. Therefore, we should pay attention to calcium supplementation, which can make the fetus not easy to be nearsighted. Recommended food: black food such as kelp, seaweed, black fungus and black sesame; Milk and bean products are also ideal choices for calcium supplementation. 500ml of milk contains about 500mg of calcium.