| 摘要 |
<p>A multifocal ophthalmic lens for viewing an object via an eye of an eyeglass wearer, comprising: a far vision ("FV") area having a refractive power; and a near vison ("NV") area having a refractive power which is different from the refractive power of the FV area, such that when a value attained by subtracting the refractive power of said FV area from the refractive power of said NV area is an addition power Add, an average surface power D11 of said FV area of a surface on a side of the object ("front surface") and an average surface power D12 of the NV area of the front surface, and an average surface power D21 of said FV area of a surface on a side of the eye ("back surface") and an average surface power D22 of the NV area of the back surface, satisfy the relationship D21-D22=Add-(D12-D11), wherein said average surface power D11 and said average surface power D12 satisfy the relationship D12-D11 > Add, wherein said front surface has a toric component with a cylinder value greater than 0.25D in modulus; and wherein said front surface has an inflection point and/or a plateau.</p> |
