The hazards of myopia include damage to vision, causing eye diseases and so on. 1. Impairment of vision: Myopia is a kind of refractive error, and patients often show that they can see distant objects indistinctly, and some severe myopia can also show poor night vision, mosquito flying and other visual impairment, which affects their daily life and brings inconvenience to their study and work. 2. Causing eye lesions: High myopia patients are also prone to retinopathy, concurrent cataract, secondary glaucoma and other complications, which in turn cause further vision loss and even blindness. It is recommended that myopic patients should consult a doctor in time to assess their condition, have their fundus examined regularly, and follow the doctor’s instructions to choose the appropriate treatment.