| 摘要 |
PROBLEM TO BE SOLVED: To provide spectacle lenses that make a person who normally wears contact lenses have no feeling of incompatibility when viewing a short-distance object in spite of spectacles of accurate diopter magnification. SOLUTION: A progressive surface of a lens having the progressive surface is used to add a diopter for the purpose of making adjustment between contact-lens use and spectacles use and adjusting imbalance of convergence to a part used for short-distance view. COPYRIGHT: (C)2007,JPO&INPIT
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