Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CONTACT LENS FOR IRREGULAR ASTIGMATISM CORRECTING
Document Type and Number:
Japanese Patent JP2011221446
Kind Code:
A
Abstract:

To materialize a new technique to provide contact lenses which can show a good correcting effect for irregular astigmatism caused by conical corneas, which cannot be corrected with existing glasses and contact lenses (residual irregular astigmatism), and the new technique can mass-produce industrially and provide effectively the contact lenses with a practical new structure without relying on customization for each person of wearing.

A contact lens for irregular astigmatism correcting, has a convex correcting area 27 on one side of a particular diameter direction line 30 and has concave correcting area 28 on another side, and in both correcting areas 27 and 28, moduli of lens diopter are set to gradually increase from circumference edge towards center part.


Inventors:
SUZAKI TOMOKI
GOTO YUJI
MAEDA NAOYUKI
Application Number:
JP2010093192A
Publication Date:
November 04, 2011
Filing Date:
April 14, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MENICON CO LTD
UNIV OSAKA
International Classes:
G02C13/00; G02C7/04
Domestic Patent References:
JPS6395415A1988-04-26
JP2007511797A2007-05-10
JP2008090103A2008-04-17
JP2009525835A2009-07-16
JP2007503235A2007-02-22
JP2006301671A2006-11-02
JPH1010476A1998-01-16
JP2005189875A2005-07-14
JPS6395415A1988-04-26
JP2007511797A2007-05-10
JP2008090103A2008-04-17
JP2009525835A2009-07-16
JP2007503235A2007-02-22
JP2006301671A2006-11-02
Foreign References:
US0009021A1852-06-15
WO2008062503A12008-05-29
US0009021A1852-06-15
Attorney, Agent or Firm:
Yoshitaka Kasai
Nakane Mie



 
Previous Patent: DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS

Next Patent: IMAGE-FORMING APPARATUS