| 摘要 |
A progressive-power lens includes an eyeball-side surface including a distance portion and a near portion having different values of dioptric power and an intermediate portion that connects the distance portion and the near portion to each other, and an object-side surface including a first region extending along a principal meridian and having a spherical shape having a first curvature, a second region facing the distance portion and having a spherical shape having a second curvature equal to the first curvature, and a third region located outside the first region and below the second region and having a third curvature greater than the first curvature. |
