How to distinguish true myopia from pseudomyopia can be confirmed by simply using ciliary muscle paralysis medication followed by an optometry. Patients with normal vision without refractive error after ciliary muscle paralysis optometry are diagnosed as pseudomyopia, and those with significant refractive error and normal corrected vision are diagnosed as true myopia. The main change in myopia is that parallel light rays from a distance are focused in front of the retina, so the main symptom is reduced distance vision, but near vision is normal. If a significant decrease in distance vision is detected, the first step is to have an optometry. Optometry for myopia, on the other hand, involves determining the refractive state without ciliary muscle paralyzing medication and after the use of ciliary muscle paralyzing medication. Optometry for ciliary muscle paralyzing medication is called dilated optometry. In adolescent children, because of strong regulation, pseudo-myopia may manifest itself, and therefore, dilated eye examinations are required. In addition, the corneal curvature and the length of the eye axis can also be checked to determine whether the eye axis is normal or not to determine true myopia. If you are diagnosed with true myopia after the examination in the hospital, you should usually consider wearing glasses to correct it.