Myopia of 300+ degrees is usually not very high, but it can cause symptoms such as blurred vision, and requires prompt medical attention for dilated optometry and selection of appropriate eyeglasses to wear. In general, 300 degrees of myopia is not very high, belongs to moderate myopia, but also need to pay attention to avoid myopia more serious. When such a situation occurs, you need to go to the hospital in time for dilated optometry, under the guidance of the doctor to wear the right glasses to correct vision, can effectively improve the observation of things blurred, visual fatigue, eye soreness and other adverse symptoms. In addition, according to the doctor’s advice, you can also choose myopia surgery to correct vision, by grinding the cornea, so as to improve the refractive state, which can effectively make the vision back to normal. During the period of vision correction, it is necessary to develop good eye habits and avoid over-exertion of the eyes to prevent a substantial increase in the number of degrees. When myopia occurs, you should consult a doctor in time for relevant examinations and choose the appropriate improvement method under the doctor’s guidance and advice.