| 摘要 |
Optimizing a spectacle lens by: obtaining prescription or refraction data VA11 and VA12 of a wearer for at least two different object distances A11 and A12 (A11≠A12), comprising data relating to a spherical power Sphv, a magnitude of an astigmatism CylV, and an astigmatism axis AxisV; specifying an object distance model A1(x, y), wherein A1 designates the object distance and (x, y) designates a visual spot or visual point of the spectacle lens in a predetermined direction of sight; specifying a function PRef=ƒ(A1), which describes the dependence of a power vector P Ref = ( M Ref J 0 Ref J 45 Ref ) = ( Sph V + Cyl V 2 - Cyl V 2  cos   2   Axis V J 45 Ref = - Cyl V 2  sin   2   Axis V ) of the prescription on the object distance A1, determining the components of the power vector PRef of the prescription in a plurality of visual points (x, y) on the basis of the object distance model A1(x, y) and the obtained prescription data VA11 and VA12; and calculating at least one surface of the spectacle lens taking the determined components of the power vector PRef of the prescription in the visual points (x, y) into account.
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