发明名称 |
MULTIFOCAL INTRAOCULAR LENSES |
摘要 |
A multifocal intraocular lens is produced which comprises a lens body having a plurality of optical zones which comprises an aspheric optical zone between each add and base power zone thereby providing a gradual transition in the curvature of the optic surface and avoiding abrupt changes in the curvature of the optic.
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申请公布号 |
CA2053403(A1) |
申请公布日期 |
1992.04.13 |
申请号 |
CA19912053403 |
申请日期 |
1991.10.11 |
申请人 |
CHRISTIE, BRUCE;GUPTA, AMITAVA |
发明人 |
CHRISTIE, BRUCE;GUPTA, AMITAVA |
分类号 |
A61F2/16;G02C7/04;G02C7/06;(IPC1-7):A61F2/16 |
主分类号 |
A61F2/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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