Today’s white-collar workers, the vast majority of people’s work is the whole day in front of the computer, a day down, the two eyes are blinded, and go home even after the TV is too lazy to open. Eyes is originally one of the body’s hardest organs, the body receives 90% of the information from the eyes. Because of this, the eyes are particularly susceptible to fatigue and aging due to hard work. In addition to staying up late and overwork, malnutrition is a major cause of eye “injury”. A study at the University of Manchester in the UK confirmed that spinach is one of the best sources of lutein, which is very effective in preventing “retinal macular degeneration” caused by eye aging. Researchers at Ohio State University in the United States said that the large amount of lutein in dark green leafy vegetables, for the prevention of cataracts is very helpful. Meanwhile, green leafy vegetables are also a good source of vitamin B2 and beta-carotene. Vitamin B2 is sufficient, the eyes will not be easy to be covered with blood; and beta-carotene, can be converted into vitamin A in the body, to prevent “dry eye disease” and other diseases. However, the benefits of spinach do not stop there. It is rich in potassium, calcium and magnesium, can help the eye muscles to strengthen the elasticity, not prone to myopia. It is understood that people with calcium deficiency have poor eyeball elasticity and their eye axes tend to elongate. A daily life of rice, fried meat, braised fish with sweet drinks and desserts will cause serious loss of calcium in the body. If you can eat less meat and more leafy greens, you can make up for this deficiency, and it is greatly beneficial to improve the elasticity of the eye muscles. In addition to spinach, baby greens, oleaginous greens, cabbage, and mullein are also inexpensive and nutritious eye care vegetables. Eat green vegetables for the importance of the eyes, no less than eating blueberries, and even more than ever. Researchers at Penn State University say that spinach is rich in nutrients when it is freshly pulled from the soil, the most important of which are two: one is the vitamin B nutrient that can prevent spina bifida in babies at birth — folic acid, and the other is the vitamin A nutrient that is needed for human growth and development and for the prevention of blindness. The other is carotene, a vitamin A nutrient that is needed for growth and development as well as to prevent blindness. In addition, spinach is rich in antioxidants, there is an immeasurable role in slowing down the aging process. A U.S. Department of Agriculture experiment showed that women who ate about 30 grams of fresh spinach a day had a better anti-aging effect than those who ate 1,250 milligrams of vitamin C or drank three glasses of red wine. But researchers have also found that spinach starts to lose nutrients a few days after it’s picked, losing nearly half of its folic acid within 4-8 days, and carotenoids drop to about 54% of their original content. How can we solve the problem of spinach’s nutrient loss? Experts say that chilling spinach in the refrigerator is a good idea. Experiments have shown that low temperatures can reduce the loss of nutrients in spinach to a large extent. In addition, many people think that canned food is definitely not as nutritious as fresh vegetables, and experts have also proved that this idea is not entirely correct. The nutrients preserved in canned spinach are a bit richer than fresh spinach that has been sitting for a while.