The S value of the refractive sphere lens in the right eye represents the degree of refractive sphere lens. At the time of optometry, some examination data will be displayed on the optometry sheet, in which S represents the degree of spherical lens, i.e. myopia or hyperopia, and C represents the degree of cylindrical lens, i.e. astigmatism. If the S value is positive, it is hyperopia, and if the S value is negative, it is myopia. If there is an abnormality in the spherical lens number, it suggests that there may be pathologic myopia or pathologic hyperopia. Myopia and hyperopia are both types of refractive error, which refers to the inability of parallel rays of light entering the eye to be clearly imaged on the retina by the refractive medium. If the examination result shows that the S value is too large, it should be corrected by wearing frames, corneal contact lenses or surgery. The specific S value of the refractive sphere lens of the right eye should be obtained by optometry in a regular hospital, and the method of correction and the next step of treatment should be determined according to the S value, other data and eye performance after consulting with a specialized doctor.