When you see your child watching TV, computer, cell phone and playing Ipad games by your side every day, do you stop him, do you play with him or leave him aside and let him play by himself? With the popularity of various electronic products, more and more young parents are giving these products a new function: electronic babysitting. Do you know what are the dangers of these little things with screens? Do you know the effects of excessive close eye use during a child’s development? Today, we will talk about myopia. As soon as a baby is born, the retina and optic nerve are not fully developed and the vision is only photopic. In the middle, the eye axis becomes longer, the corneal curvature becomes smaller, and the refractive power of the lens becomes smaller, also known as the process of orthokeratology. During this process, the refractive system continues to wear down and gradually reaches the level of perfect vision. From infancy to adolescence, the baby’s eye increases in size, with the axial length increasing from 16mm to 23mm-23.5mm. If the eye grows too rapidly during this process, beyond normal levels in childhood, myopia will increase by 300 degrees for every additional 1mm of eye growth. Children before the age of 10-12 years old have not formed a resistance mechanism to close eye use, and prolonged viewing of electronic products can lead to rapid eye growth, and the earlier myopia occurs, the more likely it is to grow disorderly, and the more likely it is to become highly myopic in the future. Children aged 0-6 years are in a special stage of development. At this age, children are suitable for distance viewing and outdoor activities, and more exposure to the natural environment can make the refractive system develop better and the eyeball wall more tough. Outdoor activities more than 2 hours a day, reduce the intake of sweets, close eye time not more than half an hour in a row, away from electronic products, to take care of the baby’s eye health.