In children, 100 degrees of true myopia can usually be corrected by optometry and lenses, and pseudomyopia caused by over-adjustment may return to normal vision after the adjustment is relaxed. The 100-degree true myopia that occurs in younger children needs prompt medical attention because children are in an important stage of visual visual function development, this period of time children and adolescents should not normally have myopia, and it is best to have a certain amount of far-sightedness reserve, premature myopia may delay and hinder the development of visual acuity and visual function. For children myopia 100 degrees after correction, in the absence of amblyopia vision development delay, is possible to correct to normal, and after correction of binocular vision function and vision development after a positive impact, with the adjustment of unhealthy eye habits can be achieved to slow down the progression of myopia. In addition, we should exclude the interference of children’s over-adjustment to the optometry results. Pseudomyopia may be restored to normal after relaxing the adjustment by dilating the pupils, so that there is no need to wear corrective lenses, and timely adjustment of eye habits and regular review can be done. It is recommended that children with true myopia should be alerted to the fact that they should seek medical attention in time and complete auxiliary examinations such as pupil dilation and optometry, and then they should be observed, corrected with lenses, or trained in visual function according to their specific conditions.