The correct writing posture should be "eyes one foot away from the book, chest one punch away from the desk, hands one inch away from the pen tip". However, when the reporter visited Guangzhou school, he found that most students in the classroom did not maintain the correct sitting posture. Parents and doctors are worried about this. But in real life, many adults don't pay much attention to sitting posture in their work and life, which may have a subtle influence on children's sitting posture.

Good sitting posture also includes a proper distance between eyes and books. When reading a book, the distance between the eyes and the book on the desktop should be 1 ft (about 30 ~ 35 cm, which can be slightly closer for children and slightly farther for adults), because the ciliary muscles are relatively relaxed in this range, which can prevent excessive visual fatigue. Be careful not to sit on the table and read.

Doctor: If you don't sit upright, it's easy to turn upside down and get indigestion.

Experts pointed out that long-term incorrect writing posture and one-shoulder backpack are the inducing factors of adolescent postural scoliosis, which will also make children with organic spinal diseases get sick prematurely and aggravate the bending angle.

Children write with their right hands, and thoracic scoliosis is characterized by high right shoulder, which will seriously affect the development of chest cavity and squeeze the heart and lungs. "The high and low shoulders caused by thoracic scoliosis are relatively easy to find. Children twisting their waist to write may also cause lumbar scoliosis, which is difficult for parents to detect. " Some children suddenly lost weight and didn't like eating. Parents think it is "indigestion". The results showed that the digestive system was compressed due to lumbar scoliosis.

Zheng said that in the past, when children were in class, teachers often emphasized "sit up straight and put your hands behind your back". At present, most schools have low requirements in this respect. "In fact, it is a good habit to sit up straight and put your hands behind your back. People will naturally hold their heads high, which is a positive factor in preventing scoliosis. He suggested that you should not lean to one side or keep the same posture for a long time, and do more pull-ups and chest-expanding exercises between classes.

Parents worry that improper sitting posture will affect their children's physical development, and impaired vision is also a big problem. According to the 2008 Student Physical Health Test Report released by Guangzhou Education Bureau last month, the detection rate of poor eyesight among students in Guangzhou remains high, and the number of "four-eyed children" is increasing year by year.

"The wrong reading and writing posture will make retinal imaging unbalanced, and seeing things in the dark for a long time will lead to myopia." Professor Guo Haike, vice chairman of the Guangdong Ophthalmology Society and director of the Department of Ophthalmology of the Provincial People's Hospital, said that this is only the superficial reason for the increase in children's myopia rate. In addition, some experts said that with the early intervention of early education classes, many parents have been advancing their children's education age, so that they start reading and writing at close range very early, which may increase the risk of promoting myopia in advance.

Children's reading light should not be too bright or too dark.

Experts suggest that primary and secondary school students should choose whiter paper when writing; Reading, such as printed matter with clear font and standard font; Ambient lighting should be soft and not dazzling. In addition, you should keep the correct posture when reading, the best distance between your eyes and the book is 33 cm, and the light should not be too bright or too dark; When watching TV, the brightness and color should be moderate.

A good sitting posture when reading and writing is: erect spine, don't lean forward too much when writing, don't shrug or tilt your head; The connecting line between the two shoulders is parallel to the desk and chair surface, the chest is not oppressed, the thighs are horizontal, and the feet are on the ground, maintaining a balanced and stable posture that is not prone to fatigue. In this way, blood circulation is smooth, breathing is free, and nerve trunks of lower limbs are not oppressed. If the center of gravity of the upper body falls on or above the ischial tubercle, it is called "leaning forward sitting posture". At this time, the back muscles are tense, and the thighs are used to maintain balance. You should sit in the front when writing. It is of great significance to take a leaning posture to prevent myopia, strabismus and amblyopia.