Myopia is a condition in which parallel light rays enter the eye with relaxed eye regulation and focus in front of the retina, making it blurred to see distant objects. The main manifestation is decreased distance vision, but normal near vision and easy visual fatigue. There are no ten clinical reasons for myopia, but the causes of myopia are mainly related to genetic factors, environmental factors, personal factors, and dietary habits. 1. Genetic factors: Myopia has a certain possibility of family inheritance, and if a family has parents with high myopia, the incidence of myopia in the next generation of the family will be very high. 2. If a family has a parent with high myopia, the incidence of myopia in the next generation of the family will be very high; 2. Environmental factors: If you read a book or work in a place with too much light or too little light, it may cause your eyes to have trouble reading fonts or seeing things, which can lead to eye fatigue, which can lead to myopia; 3. There is also reading in an active vehicle or walking, so that the distance between the eyes and the book can not be fixed, if the lighting conditions are not good at this time, it may also increase the burden on the eyes, which may also lead to the occurrence of myopia. In addition, lying in bed reading, writing incorrect posture, etc. may lead to the occurrence of myopia; 4, dietary factors: If during the development of children’s vision, the diet is not balanced, resulting in a lack of vitamins, proteins, trace elements, etc., may also affect the development of children’s vision, which may cause the occurrence of myopia. Daily need to pay attention to the correct use of the eyes, in the right distance, lighting to read books, use of electronic products to control the time, to reduce the damage to the eyes. You should also pay attention to diet, you can eat more foods rich in vitamin A and vitamin C, such as carrots, spinach, oranges, green peppers, etc.