Title:
INTRAOCULAR LENS
Document Type and Number:
WIPO Patent Application WO/2021/111821
Kind Code:
A1
Abstract:
Provided are an intraocular lens and related technology, whereby an average value (greater than 0D) inside a first region for a base difference value, from a lens center O to a first boundary position r1, is greater than 5 times the average value (greater than 0D) within the first region for the base differential value, from the lens center O to the position r1, for a virtual spherical lens having base power at the lens center O. A second region has a power having at least one positive constant power applied to a reference aspheric power. In a third region: the base power is reduced so as to provide a negative longitudinal spherical aberration that at least partially offsets the positive longitudinal spherical aberration provided by the cornea; and a second step value is greater than a first step value.
Inventors:
DEMAS SANGER (JP)
Application Number:
PCT/JP2020/041882
Publication Date:
June 10, 2021
Filing Date:
November 10, 2020
Export Citation:
Assignee:
HOYA CORP (JP)
International Classes:
A61F2/16
Domestic Patent References:
| WO2008078804A1 | 2008-07-03 | |||
| WO2009153873A1 | 2009-12-23 | |||
| WO2008078804A1 | 2008-07-03 |
Foreign References:
| JPH06508279A | 1994-09-22 | |||
| JP2003532157A | 2003-10-28 | |||
| JP2007330478A | 2007-12-27 |
Other References:
See also references of EP 4070761A4
Attorney, Agent or Firm:
FUKUOKA Masahiro et al. (JP)
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