The degree of myopia is not high, but the naked eye vision is poor. Depending on the degree of naked eye vision loss, different populations perform differently. Clinically, it is mainly seen for the following reasons: a. Poor eye regulation: excessive eye regulation due to various reasons, commonly seen in people with pseudomyopia, while pseudomyopia is commonly seen in the adolescent population, which can be due to prolonged close reading of books, homework or Internet classes, which can lead to spasm of the ciliary muscle of the eye, which in turn causes thickening of the lens, thus occurring after the refraction of parallel light through the refractive system of the eye, in This causes parallel light rays to refract through the eye’s refractive system and focus in front of the retina, resulting in unclear vision at a distance. Patients with pseudomyopia do not need to wear optical glasses to correct it, but can take proper rest, pay attention to reading and writing with proper posture, look far away more often, increase outdoor sports and avoid staying up late. In addition, regular visits to the hospital optometry, beware of pseudomyopia caused by visual fatigue evolved into true myopia. Second, other diseases: 1, corneal disease: including corneal leukoplakia, corneal clouding, corneal opacity, etc., can lead to blurred vision; 2, lens clouding: also known as cataract, more common in the elderly, with the increase in age, the density of the lens will increase, thus leading to blurred vision; 3, eye inflammation: such as uveitis, can also lead to unclear vision of patients; 4, glaucoma: when patients glaucoma attacks, it can also manifest as blurred vision; 5, fundus lesions: such as diabetic retinopathy, macular degeneration, macular fissure, optic nerve atrophy, etc., can appear myopia, although not high, but the naked eye vision is also relatively poor.