Title:
CONTACT LENS FOR CORRECTION OF IRREGULAR ASTIGMATISM
Document Type and Number:
WIPO Patent Application WO/2011/129060
Kind Code:
A1
Abstract:
Disclosed is the implementation of new technology for effectively providing a contact lens capable of achieving satisfactory corrective effects even with respect to irregular astigmatism (residual irregular astigmatism) caused by a conical cornea and so forth, which could not be corrected with conventional eye glasses or contact lens, wherein said contact lens is not dependent on being made to order for each wearer but is industrially mass-producible by means of a practical and novel structure. A contact lens for correcting irregular astigmatism is disclosed wherein a positive correction area (27) is provided on one side of a special radial line (30) and a negative correction area (28) is provided on the other side while in any of the correction areas (27, 28) the lens power is configured so that the absolute value becomes progressively larger from the peripheral edge portion towards the central portion.
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Inventors:
SUZAKI ASAKI (JP)
GOTO YUJI (JP)
MAEDA NAOYUKI (JP)
GOTO YUJI (JP)
MAEDA NAOYUKI (JP)
Application Number:
PCT/JP2011/001748
Publication Date:
October 20, 2011
Filing Date:
March 24, 2011
Export Citation:
Assignee:
MENICON CO LTD (JP)
UNIV OSAKA (JP)
SUZAKI ASAKI (JP)
GOTO YUJI (JP)
MAEDA NAOYUKI (JP)
UNIV OSAKA (JP)
SUZAKI ASAKI (JP)
GOTO YUJI (JP)
MAEDA NAOYUKI (JP)
International Classes:
G02C13/00; G02C7/04
Domestic Patent References:
| WO2008062503A1 | 2008-05-29 |
Foreign References:
| JPH1010476A | 1998-01-16 | |||
| JP2009525835A | 2009-07-16 | |||
| JP2007503235A | 2007-02-22 | |||
| JP2005189875A | 2005-07-14 | |||
| JPS6395415A | 1988-04-26 | |||
| JP3870219B2 | 2007-01-17 |
Other References:
See also references of EP 2560040A4
Attorney, Agent or Firm:
KASAI, Yoshitaka et al. (JP)
Yoshitaka Kasai (JP)
Yoshitaka Kasai (JP)
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Claims: