High myopia is defined as myopia of more than 600 degrees. Due to the poor vision of the patient’s naked eye, it used to be difficult for them to participate in strenuous sports such as soccer, basketball, horseback riding, diving, boxing, fast running and high and long jumping. With the advent of contact lenses and the rapid development and promotion of laser surgery, some patients with high myopia can recover their vision to over 1.0 in both eyes after wearing contact lenses or undergoing surgery, so they can participate in these sports comfortably. However, participation in these strenuous sports may bring eye injuries to patients, the reasons for which are: 1. Highly myopic eyes due to the growth of the anterior and posterior diameter of the eye, the retina and choroid can not be correspondingly longer, thus leading to diffuse atrophy of the retina and choroid and peripheral retinal degeneration, vitreous properties will also change. When the head is subjected to excessive vibration, the retina is tracted and prone to detachment. Statistics show that 1/3 of patients with primary retinal detachment also have high myopia, and retinal detachment can occur in more than 5% of patients with high myopia. However, the various surgeries performed to date to treat myopia mainly correct vision by changing the refractive power of the cornea, and cannot yet fundamentally prevent the development of these pathological changes. In other words, highly myopic patients who have had myopia surgery are also prone to retinal detachment. Highly myopic patients usually have thinner corneas than normal people and are more prone to ocular trauma when they encounter an external impact. 3. Once a retinal detachment or a ruptured eye occurs after an impact, the results of treatment are often unsatisfactory and can even lead to blindness. Suggestions: Highly myopic people should give up their favorite sports such as soccer, basketball, horseback riding, diving, boxing and fast running, high jumping and long jumping in order to protect their eyesight, and opt for moderate intensity sports such as brisk walking, swimming and cycling instead.