Purpose. Analysis of the dynamics of the progression of myopia with observance and non-observance of the rules of visual work in primary school students. Material and methods. There were 40 children under supervision. The age at initial treatment was 8-10 years. All children were diagnosed with acquired myopia of mild degree from 1.0 to 3.0 D upon treatment. The children were observed for three years. At the first visit, the child's parents were explained in detail the mechanisms of the onset of school myopia, in particular, they focused on two reasons – bowed head syndrome and infinity of visual work, taking into account the use of gadgets. Results. For the analysis, 2 observation groups were formed. 1st group – 20 children (40 eyes), who strictly adhered to the rules of visual work at close range. The 2 nd group of children (20 people, 40 eyes) continued, despite the doctor's recommendations, to adhere to their usual way of life. When analyzing the results of the examination in the 1 st group of children, it was found that over 3 years of observation, all children showed a tendency towards a slow progression of myopia. This was expressed in the annual increase in the length of the anteroposterior axis (APA) of the eye by an average of 0.2 mm, which corresponded to an increase in refraction by no more than 1.0 D. In patients of the 2 nd group, over 3 years of follow-up, there was a significant progression of myopia with an annual increase in the length of the APA of the eye by an average of 0.5 mm, which corresponded to an increase in refraction by 3.5 D. Conclusion. This analysis showed that there are simple, affordable, inexpensive, non-surgical, but effective ways to prevent the progression of myopia, which makes it possible to reduce the likelihood of a rapid progression of myopia by 2.5 times. Key words: progression of myopia, anteroposterior axis of the eye, refraction, school myopia, visual stress regime.