Myopia 0.5, with no clear corresponding degree of myopia. Myopia 0.5 means that during a vision test, the patient can distinguish that the smallest object on the vision chart is located in the line of 0.5, which is indicated as the naked eye vision. The number of myopia needs to be detected by computerized optometry and subjective optometry, which is the number of refractive errors, and there is no clear correspondence between the two. If you want to know the degree of your myopia, you should go to a regular eye hospital and test the degree of myopia through computerized optometry and subjective optometry under the guidance of a doctor. If patients have problems with their vision, they can be corrected by wearing glasses and refractive surgery under the guidance of doctors. In daily life, it is necessary to pay attention to the protection of eyesight, do not use the eyes excessively, maintain correct eye habits and posture, and also have regular eye examinations.