How to prevent myopia? To prevent myopia, pay attention to the following points: ① To develop the correct posture of children reading and writing, the distance between the eyes and the book should be kept about 30 cm. ②When reading and writing, the light should be moderate, not too strong or too dark, and the light should come from the left front, so that the shadow of the hand does not prevent the vision. ③ reading time should not be too long, every 40 to 50 minutes, you should rest 10 to 15 minutes, close your eyes or look into the distance for a few minutes or do eye exercises to prevent excessive eye fatigue. ④Don’t read books and newspapers with too small or blurred handwriting, and don’t write too small. ⑤ Educate children to correct unreasonable eye habits, such as lying on the table, tilting the head to read or write, lying in bed to read, reading while eating, reading under strong light or dim street lights, moonlight, and reading in a moving car or while walking, etc. These bad habits can overstrain the eyes and reduce the acuity of vision. Preventive measures should also be taken in the following areas: (1) prohibit marriage between close relatives. (2) Pay attention to eye care. The prevention of myopia advocates the word early, i.e., it should start when school-age children. ①Schools and parents should pay special attention to the child’s study lighting to meet the requirements (50-100 meters candlelight), specifically, such as the use of 25-watt ordinary light bulbs, the illumination at a distance of half a meter is about 50 meters candlelight, and the rest of the analogy. ② Prevent excessive use of the eyes, that is, do not make the internal and external muscles of the eyes overworked or in a state of long-term tension. ③Strengthen vision training and adhere to eye exercises. ④Prevent television myopia. (3) Strengthening physical exercise and physical fitness can reduce and slow down the occurrence of myopia, especially outdoor sports. It is also one of the best ways to take care of the eyes to let the children enjoy the mountains and rivers of the motherland with a long view in the countryside with fresh air and a wide field of vision. (4) Pay attention to nutritional supplements, especially vitamin B and minerals, as they are necessary for eye development and functional progress. Can eugenics reduce myopia in children? There is some truth in blaming the parents when their children get myopia. For a long time, many surveys have confirmed that the occurrence of myopia is somewhat familial, with more children suffering from myopia if both parents are myopic, less children suffering from myopia if both parents are not myopic, and somewhere in between if one parent is myopic. Therefore, myopia in children is very closely related to their parents. Due to improper parental marriage, bad gestation period and cause children’s eye deformity, strabismus, refractive error, amblyopia, etc. for a number of parents, some parents in order to children’s eye disease diagnosis and treatment, running around, silently bear the inner pain, infinite cost; there are a few parents, not remorse themselves and give up treatment to their children coldly, and even more, to the child’s eye disease to apply for another child …… We really feel pain and guilt for these ignorant, foolish and heartless parents, and we also have more compassion for those victimized children. Here we would like to warn these parents to know now, why should they do it in the first place! For the benefit of future generations, eugenics is irresistible.