Only according to the patient’s visual acuity of 1.0 to determine the degree of myopia is not desirable, we need to carry out optometry to determine the degree. Although the higher the degree of myopia, the patient’s visual acuity naked eye vision decline is more obvious, but there is no one-to-one quantitative relationship between the two, and can not be based on the patient’s visual acuity, the presumption of the degree of patients if you want to clarify the degree of need to carry out an optometry examination. And naked eye vision is susceptible to many influences, in addition to myopia, hyperopia and other refractive error factors, corneal disease, retinal function abnormalities, etc. may lead to patients with vision loss. If the patient’s naked eye vision is 1.0, it belongs to the normal vision range, but it does not exclude the possibility that the patient suffers from myopia. It is recommended that patients with reduced vision seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.