Myopia is a highly prevalent disorder in adolescence, so it is important to understand the early symptoms of myopia in adolescence in order to take preventive measures and treatment. 1, vision loss: nearsightedness is blurred, it is difficult to recognize long-distance targets, like squinting are early symptoms of myopia in adolescents. Most children do not like outdoor activities because they cannot see far, but are more interested in reading, painting and other indoor activities, which in turn promotes the development of myopia, and myopic eyes generally have better near vision and clearer near vision; pathological myopia is not only blurred at a distance, but also not very clear near. This is one of the early symptoms of myopia in adolescents. 2, visual fatigue: due to blurred vision, reading distance is too close, excessive convergence, over-regulation and regulatory spasm caused by adolescent myopia. 3, mosquito phantom vision: moderate myopia due to vitreous clouding liquefaction and mosquitoes. 4, double vision: is also an early symptom of adolescent myopia, commonly due to pathological myopia or refractive error. 5, visual distortion: common in pathological myopia or the emergence of retinal detachment and other complications. 6. Flashing sensation: Commonly seen in pathological myopia or as a precursor to retinal detachment. 7. Proptosis: Highly myopic eyes should be mildly proptotic in appearance due to the excessive length of the eye axis. Through the introduction of the above content, I believe you have understood what are the early symptoms of myopia in adolescents. Remind everyone to pay attention not to overuse the eyes to prevent the occurrence of myopia.