发明名称 |
Surface-treated contact lens and method of producing |
摘要 |
A contact lens for correction of astigmatism is formed from a single polymeric or copolymeric material. The lens has a central optical zone of greater rigidity than a surrounding non-optical zone. The rigidity of the central optical zone is sufficient for it to retain an astigmatism-correcting shape when worn on an eye, while the surrounding non-optical zone conforms to the shape of the eye.
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申请公布号 |
US4666249(A) |
申请公布日期 |
1987.05.19 |
申请号 |
US19850765891 |
申请日期 |
1985.08.14 |
申请人 |
SOLA U.S.A. INC. |
发明人 |
BAUMAN, ROBERT E.;CHANDRASEKARAN, S. KUMAR;LIN, SHAOW B.;BOWMAN, LYLE M.;HARVEY, III, THOMAS B. |
分类号 |
G02C7/04;C08J7/12;G02B1/04;(IPC1-7):B29D11/00 |
主分类号 |
G02C7/04 |
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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