| 摘要 |
PROBLEM TO BE SOLVED: To provide glasses which hardly tires a user even if he/she uses to see nearby for reading or the like for a long time. SOLUTION: The glasses includes an extensible bridge or a laterally extensible bridge in consideration of that the interocular distance is reduced by 4 to 5 mm when seeing nearby, so that a near interocular distance can be provided to reduce an unnecessary prism. COPYRIGHT: (C)2009,JPO&INPIT
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