The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2014
Filed:
Mar. 24, 2011
Asaki Suzaki, Kasugai, JP;
Yuji Goto, Komaki, JP;
Naoyuki Maeda, Suita, JP;
Menicon Co., Ltd., Nagoya, JP;
Osaka University, Osaka, JP;
Abstract
Disclosed is an 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 the 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 correction of irregular astigmatism is disclosed wherein a positive correction area () is provided on one side of a special radial line () and a negative correction area () is provided on another side while in any of the correction areas () a lens power is configured so that an absolute value becomes progressively larger from an outer peripheral edge part towards a central portion.