Multifocal lens having an optical add power progression, and a system and method of providing same

Patent metadata

Field	Value
Publication number	US-9817246-B2
Application number	US-201113309314-A
Country	US
Kind code	B2
Filing date	Dec 1, 2011
Priority date	Dec 1, 2010
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

An apparatus, system and method including an ophthalmic lens having an optic with an anterior surface, a posterior surface, and an optical axis. The ophthalmic lens further includes a first region having a first optical power and a second region having a second optical power. The ophthalmic lens further includes a third region having an optical power that progresses from the first optical power to the second optical power. The progression may be uniform or non-uniform. Each of the first, second and progression optical power may include a base power and an optical add power. Each of the first, second and progression regions may provide a first focus, a second focus and a plurality of third foci, respectively.

First claim

The invention claimed is:

1. An ophthalmic lens, comprising:
an optic having a vertical diameter and a horizontal diameter, comprising:
a first region having a first optical power for providing a first focus, wherein the first region comprises an uppermost portion of said optic and wherein the first optical power is constant along each horizontal cross section in the first region;
a second region having a second optical add power different from the first optical power for providing a second focus, wherein the second region comprises a lowermost portion of said optic and wherein the second optical add power is constant along each horizontal cross section in the second region; and
a third region having at least the first optical power and a plurality of third optical add powers comprising a progression of optical add powers increasing along the vertical diameter from the first optical power to the second optical add power, wherein the third region comprises a central portion of said optic, wherein an uppermost boundary of the third region is above a center of said optic and a lowermost boundary of the third region is below the center of said optic, and wherein each of the plurality of third optical add powers is constant along a horizontal cross-section in the third region parallel to the horizontal diameter.

2. The lens of claim 1 , wherein the uppermost portion comprises at least the uppermost 25% along the vertical diameter of said optic.

3. The lens of claim 1 , wherein the uppermost portion comprises the uppermost 37.5% along the vertical diameter of said optic in the complete optic.

4. The lens of claim 1 , wherein the second focus comprises a near vision focus.

5. The lens of claim 1 , wherein the lowermost portion comprises at least the lowermost 25% along the vertical diameter of said optic.

6. The lens of claim 1 , wherein the central portion comprises a centralmost of at least 25% along the vertical diameter of said optic.

7. The lens of claim 1 , wherein the central portion comprises a centralmost of at least 37.5% along the vertical diameter of said optic.

8. The lens of claim 1 , further comprising at least one haptic that at least partially supports said optic within a subject eye.

9. The lens of claim 1 , wherein the progression of optical add powers in the third region is continuous.

10. The lens of claim 1 , wherein the progression of optical add powers in the third region is step-wise.

11. The lens of claim 1 , wherein the progression of optical add powers in the third region is uniform.

12. The lens of claim 1 , wherein the progression of optical add powers in the third region is non-uniform.

13. The lens of claim 1 , wherein the third region has a constant height measured along a vertical diameter of the optic.

14. The lens of claim 1 , wherein the third region is asymmetric with respect to the center of the optic.

Assignees

• Canovas Vidal Carmen
• Van Der Mooren Marrie H
• Weeber Hendrik A
• Amo Groningen Bv

Inventors

• Canovas Vidal Carmen
• Van Der Mooren Marrie H
• Weeber Hendrik A

Classifications

• G02C7/042

  Simultaneous type · CPC title

• A61F2/1618

  Multifocal lenses · CPC title

• A61F2/164

  Aspheric lenses · CPC title

• G02C7/045 Primary

  Sectorial configuration · CPC title

• A61F2/1616

  Pseudo-accommodative, e.g. multifocal or enabling monovision · CPC title