8 year old with 50 degrees of true myopia usually need glasses, and also need to follow the doctor’s instructions for regular check-ups during the glasses wearing period, in order to know how the vision is doing. True myopia is generally irreversible. If a child is 8 years old with 50 degrees of true myopia, he or she may experience changes in vision, visual fatigue, abnormal eye position and other symptoms. Failure to wear glasses in time may lead to further increase in myopia, affecting normal life and study. Therefore, once a child is diagnosed with true myopia, he/she needs to wear glasses in time for correction. Before vision correction, he/she needs to go to a regular hospital for standardized medical optometry examination and choose prescription glasses under the doctor’s advice, as inappropriate prescription will lead to too fast growth of myopia. Usually, wearing eyeglasses requires long-term persistence, which is conducive to controlling the development of the disease and improving the visual function of both eyes. In daily life, children should avoid excessive eye use, change bad eye habits and increase outdoor activities appropriately.