| 摘要 |
An eyeball infraduction value Indih is measured, and then &Dgr;E is determined from an equation &Dgr;E=Indih−(Fh+SPh+Nh) based on the eyeball infraduction value Indih, a distance portion eyepoint height Fh, a progressive corridor length SPh, and a reading portion eyepoint height Nh, and Oh is determined from an equation of Oh=Bh−(Fh+SPh+Nh+&Dgr;E+Uh) based on the &Dgr;E, a lens portion height Bh, the distance portion eyepoint height Fh, the progressive corridor length SPh, the reading portion eyepoint height Nh, and a lower frame height Uh. A spectacle lens that satisfies conditions of 0 mm≦̸&Dgr;E≦̸2 mm and 0 mm<Oh is selected. |
