US 11,051,933 B2
Aspherical multifocal intraocular lens
John Clough, St. Pete Beach, FL (US)
Assigned to Lenstec Barbados Inc.
Filed by Lenstec Barbados Inc.
Filed on May 24, 2019, as Appl. No. 16/421,947.
Application 16/421,947 is a continuation of application No. 15/855,658, filed on Dec. 27, 2017, granted, now 10,299,911, issued on May 28, 2019.
Application 15/855,658 is a continuation of application No. 15/209,313, filed on Jul. 13, 2016, granted, now 9,889,001, issued on Feb. 13, 2018.
Application 15/209,313 is a continuation of application No. 13/671,900, filed on Aug. 11, 2012, granted, now 9,433,496, issued on Sep. 6, 2016.
Prior Publication US 2019/0274821 A1, Sep. 12, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/16 (2006.01)
CPC A61F 2/1618 (2013.01) [A61F 2/16 (2013.01); A61F 2/164 (2015.04); A61F 2/1613 (2013.01); A61F 2/1648 (2013.01); A61F 2/1637 (2013.01); A61F 2002/1689 (2013.01); A61F 2250/0053 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A multifocal lens comprising:
a posterior lens surface having a first radius of curvature
an anterior aspheric lens surface, said anterior aspheric lens surface having a first aspheric distance optic portion having a radius of curvature equal to the first radius of curvature of the posterior lens surface and
a second near optic portion having a radius of curvature less than that of the first portion thereby forming a second optic surface on the anterior lens surface, the second near optic portion having an outer perimeter, and
a flat surface extending outwardly from the entire radially outer perimeter of the anterior lens near optic portion.