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:
Mar. 25, 2025
Filed:
Nov. 10, 2020
Hoya Medical Sinapore Pte. Ltd., Singapore, SG;
Demas Sanger, Fukaya, JP;
Hoya Medical Singapore Pte. Ltd., Singapore, SG;
Abstract
Provided are an intraocular lens and a technique associated therewith, wherein an average value (exceeding 0 D) of base difference values within a first region from a lens center O to a position r1 of a first boundary is greater than 5 times an average value (exceeding 0 D) of base difference values within the first region from a lens center O of a virtual spherical lens having a base power at the lens center O to the position r1, a second region has a power resulting from adding one or more positive constant powers to a reference aspheric power, in a third region, the power is reduced so as to provide a negative longitudinal spherical aberration that cancels at least part of a positive longitudinal spherical aberration caused by a cornea, and a second step value is greater than a first step value.