US 11,751,990 B2
Full depth of focus intraocular lens
Yueai Liu, Arlington, TX (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Apr. 11, 2019, as Appl. No. 16/381,359.
Claims priority of provisional application 62/656,400, filed on Apr. 12, 2018.
Prior Publication US 2019/0314148 A1, Oct. 17, 2019
Int. Cl. A61F 2/16 (2006.01)
CPC A61F 2/1618 (2013.01) [A61F 2/1621 (2013.01); A61F 2/1654 (2013.01); A61F 2002/1683 (2013.01)] 5 Claims
OG exemplary drawing
1. An intraocular lens (IOL) comprising:
an anterior surface and a posterior surface, at least one of the anterior surface and posterior surface including a first surface region corresponding to a photopic aperture of a pupil and a second surface region corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil; and
a first microstructure pattern formed in the first surface region, the first microstructure pattern comprising a plurality of structures having non-repetitive and non-gradual step heights for introducing a phase perturbation into an optical path of incoming light such that a continuous full depth of focus for photopic vision is provided,
wherein the first microstructure pattern is defined by a step pattern.