| 摘要 |
A non-progressive ophthalmic lens (52) used in eye frames is provided with at least two and preferably only two distinct prescriptions (4, 6). A very large lower area (lower relative to the face and eyes of the wearer) is provided with intermediate or near distance vision correction prescription (4). A smaller, top portion of the lens is provided with a stable power, containing the wearer's prescription (or non-prescription of zero power) for distance vision correction (6). The two powers preferably meet at a lined intersection (40) to conserve space that would be consumed by a progressive joining or blending of the two powers.
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