| 摘要 |
A pair of spectacle lenses, each of the pair of spectacle lenses comprising:
a first refractive portion having a first refractive power; a second refractive portion having a second refractive power stronger than the first refractive power; and a progressive power portion in which a refractive power changes progressively from the first refractive portion to the second refractive portion, first refractive powers of a left and a right of the pair of spectacle lenses being different from each other, wherein lengths of progressive power portions of the left and the right of the pair of spectacle lenses are different from each other and changing rates of additions of the left and the right of the pair of spectacle lenses are different from each other in accordance with a shift between left and right visual lines so that a difference between addition effects actually acting on left and right eyes of a wearer, on a principal meridian extending from the first refractive portion to the second refractive portion, is reduced when the left and right visual lines shift with respect to each other depending on a fact that the first refractive powers of the left and the right of the pair of spectacle lenses are different from each other in a state where the wearer views an object through the pair of spectacle lenses. |
