Visual acuity of 0.8 is usually in the range of 50-100 degrees of myopia, which is relatively a low degree of myopia and usually has a relatively small impact on vision. However, if it is a small child, even if it is a relatively low degree of myopia, but 0.8 vision is relatively less desirable, usually consider to improve the vision through correction at about 1.0, for the development of visual function are beneficial. In the case of adults, a vision of 0.8 is sufficient for the vast majority of people, especially in the case of binocular vision, and can usually reach a vision of 1.0, which is not a problem for daily vision needs. But for people who work with long-distance vision, such as drivers or frequent movie-goers, they may still need to wear a pair of low-degree myopic glasses, which can be worn when needed.