Presbyopia eats more black beans and honey. Presbyopia is characterized by gradual decline in near vision and difficulty in reading and working at close range. This is a normal aging phenomenon. Presbyopia often appears earlier when you are weak or have some eye diseases, and the symptoms are more serious. Chinese medicine believes that presbyopia is caused by deficiency of kidney water and essence and blood, and the diet should eat more fruits and vegetables, bean products, animal liver and honey. Black beans have the function of tonifying kidney and nourishing blood, and have the function of strengthening teeth and improving eyesight for the elderly. Honey contains a variety of amino acids, which can delay aging. Vitamin C supplementation in the treatment of senile cataract is characterized by slow vision loss due to aging and lens opacity. It was found that the contents of glutathione and vitamin C in turbid lens decreased and trace elements were unbalanced. Hen, astragalus, lentils, red dates, black dates, pig liver, chicken liver, leeks, sheep liver, green tea, soybean milk and various bean products can all be prevented and controlled. More importantly, most cataract patients lack vitamin C, so tomatoes, oranges, apples, grapes, watermelons, kiwis and other fruits and vegetables rich in vitamin C are the most effective preventive foods. In addition, to prevent cataracts, the elderly should pay attention to adequate intake of zinc and vitamins A, D, E and riboflavin, which can also improve their eyesight. Foods with high zinc content include shrimp, shrimp skin, walnuts, peanuts, beef and mutton, clams and oysters. Foods rich in vitamins A, E and riboflavin include various animal livers, milk, egg yolks, crab roe, auricularia auricula, soybeans and black sesame seeds. Glaucoma should not drink more water. The main feature of primary glaucoma is the increase of intraocular pressure, which causes blood circulation disorder, intraocular tissue edema and optic nerve fiber degeneration and atrophy. Acute patients can be blind within a few days, while chronic patients' vision gradually declines and their vision gradually narrows. Eating more foods such as day lily, longan, red dates, medlar, broilers, peanuts, walnuts, soybean milk, poria cocos, pork, beef and so on can play a role in preventing and treating glaucoma. Glaucoma patients should not drink more water to avoid aggravating their condition. Milk, soy milk, juice and other daily liquid diets should also pay attention to the right amount. It is not advisable to eat spicy food such as green onions, ginger and garlic. Patient nutrition expert: all-around