If you want to know whether your eyes have refractive error and the degree of refractive error, you must go to a regular hospital for an optometry examination, which is the gold standard for diagnosing refractive error. Optometry is a routine ophthalmology examination, which can accurately understand the presence of myopia, astigmatism, hyperopia and other conditions and the exact degree of the eye. If the condition is present and the prescription is high enough to affect your vision, you should wear glasses early to improve your vision. If the prescription is not too high, it can be observed first. If you are a minor, such as a child or adolescent within 12 years of age, it is recommended that you have an optometric examination with dilated pupils, as the results will be more accurate and will truly reflect the refractive state of the eye, as this will relax the ciliary muscle and exclude the eye’s own adjustment function.