Myopia of 300 degrees is considered moderate myopia, and this type of myopia usually results in reduced vision and, in most cases, a bare eye vision of less than 0.3. Each person’s eye adjustment ability is different, so naked eye vision does not appear exactly the same in each person. This situation has seriously affected the normal life or study, so you need to wear glasses early, only with glasses can keep the corrected vision in the normal range, so as to avoid the occurrence of eye fatigue. After 300 degrees of myopia, you must pay attention to reasonable eye habits in general. If you don’t pay attention to your eye habits, the degree of myopia will definitely become higher and higher. If it exceeds 600 degrees, it becomes high myopia, which will cause not only vision loss, but also high myopic fundopathy.