Myopia of more than 600 degrees already belongs to the category of high myopia, belongs to the state of more serious need to cause alarm, it is recommended that after the need for regular review attention to eye use. Myopia of 600 degrees and above has reached the degree of high myopia, for high myopia eye axis continues to grow, may occur retinal split, retinal detachment and other serious complications need to be alerted. For high myopia of more than 600 degrees, it is recommended to go to the hospital regularly to improve optometry, fundus photography and other auxiliary examinations. With the increasing use of cell phones, computers and other electronic products, as well as outdoor exercise and other bad eye habits, more than 600 degrees of high myopia in the population more and more common, about the prevention and control of myopia in children and adolescents has attracted great attention at the national and social levels. It is suggested that the prevention and control of high myopia should start from children and adolescents, early myopia should be detected and corrected in time, and for the high myopia that has already occurred, it is necessary to be alert to the occurrence of related complications and take timely measures.