The best vision development for children is to keep reading time within 4 hours a day, look close for 10 minutes and then look away for 10 minutes, which means the ratio of looking away to looking near is 1:1. Schools and families should allow children to do 45 minutes of close reading time and then ensure that they look away for 10 minutes to also achieve vision protection. The damage of video terminals on children’s eyesight has been recognized by ophthalmologists worldwide. Parents should strictly limit the time children spend watching TV, using computers and playing games, and each time they use a computer for 20 minutes they must blink 20 times continuously and look away for 10 minutes to relax the ciliary muscle and relieve visual fatigue. Children should try to ensure one hour of outdoor activity every day, and the younger they are, the longer the outdoor activity should be. They should also try to get 8 to 9 hours of sleep. Children should do crystal exercises twice a day at home to enhance the elasticity of the eye muscles and relieve visual fatigue. The specific practice is: parents will enlarge the child’s favorite page of reading material printed in two font sizes, paste a large font size at 5 meters, another small font size held in the hand, line of sight held flush at 33 cm from the eyes, let the child read, first read a line far away, then read a line near, repeatedly, twice a day, 15 minutes each time.