Mask lens design and method for preventing and/or slowing myopia progression

Patent metadata

Field	Value
Publication number	US-9594259-B2
Application number	US-201414472623-A
Country	US
Kind code	B2
Filing date	Aug 29, 2014
Priority date	Aug 29, 2014
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

Contact lenses incorporate mask lens designs that at least one of slow, retard or preventing myopia progression. The lens includes a first zone at a center of the lens; at least one peripheral zone surrounding the center and having a dioptric power that is different than that at the center; and an opaque mask beginning at a radial distance from the center, thereby providing a lens power profile having substantially equivalent foveal vision correction to a single vision lens, and having a depth of focus and reduced retinal image quality sensitivity that slows, retards, or prevents myopia progression.

First claim

What is claimed is:

1. An ophthalmic lens for at least one of slowing, retarding or preventing myopia progression, the ophthalmic lens comprising:
a first zone at the center of the ophthalmic lens; and
at least one peripheral zone surrounding the center and having a dioptric power that is different than that at the center; and
an opaque mask extending from the at least one peripheral zone, thereby providing a lens power profile having substantially equivalent foveal vision correction to a single vision lens, and having a depth of focus and reduced retinal image quality sensitivity that slows, retards, or prevents myopia progression, the opaque mask being described by
P ( r )= P SEG ( r )+24×SQRT(5)× SA×r 2 /3.25 4 −12×SQRT× SA/ 3.25 2 ,r<r MASK   (1)

wherein P represents the dioptric power (D);
r represents a radial distance from a geometric lens center;
SA represents an amount of spherical aberration; and
P SEG (r) represents a step function that has a number of zones with different magnitudes.

2. The ophthalmic lens according to claim 1 , wherein the reduced retinal image quality sensitivity is in a range of 0.2 to 1.7 for accommodative states ranging from about 1D to about 5D.

3. The ophthalmic lens according to claim 1 , wherein the reduced retinal image quality sensitivity is in a range of 0.2 to 0.5 for accommodative states ranging from about 1D to about 5D.

4. The ophthalmic lens according to claim 1 , wherein the ophthalmic lens comprises a contact lens.

5. The ophthalmic lens according to claim 1 , wherein the ophthalmic lens comprises a spectacle lens.

6. The ophthalmic lens according to claim 1 , wherein the ophthalmic lens compromises an intraocular lens, a corneal inlay, or a corneal onlay.

7. The ophthalmic lens according to claim 1 , wherein an inner radius of the mask begins at 2 mm to 3 mm from the center of the ophthalmic lens.

8. The ophthalmic lens according to claim 1 , wherein the mask comprises a colored or black ring.

9. The ophthalmic lens according to claim 1 , wherein the power profile is multizonal and the at least one peripheral zone comprises two or more stepped zones.

10. The ophthalmic lens according to claim 1 , wherein the power profile is a continuous power profile and the at least one peripheral zone comprises a continuous transition between two or more zones having different dioptric powers.

11. The ophthalmic lens according to claim 1 , further comprising one or more stabilization mechanisms.

12. The ophthalmic lens according to claim 1 , wherein the power profile is adjustable based upon pupil size to achieve a balance between foveal vision correction and an effective depth of focus and reduced retinal image quality sensitivity for treating myopia progression.

13. An ophthalmic lens for at least one of slowing, retarding or preventing myopia progression, the ophthalmic lens comprising:
a first zone at the center of the ophthalmic lens; and
at least one peripheral zone surrounding the center and having a dioptric power that is different than that at the center; and
an opaque mask extending from the at least one peripheral zone, thereby providing a lens power profile having substantially equivalent foveal vision correction to a single vision lens, and having a depth of focus and reduced retinal image quality sensitivity that slows, retards, or prevents myopia progression, the opaque mask being described by
P ( r )= P pCHIP ( r )+24×SQRT(5)× SA×r 2 /3.25 4 −12×SQRT× SA/ 3.25 2 ,r<r MASK   (1)

wherein P represents the dioptric power (D);
r represents a radial distance from a geometric lens center;
SA represents an amount of spherical aberration; and
P pCHIP (r) represents a Piecewise Cubic Hermite Interpolating Polynomial curve control by number of points.

Assignees

• Johnson & Johnson Vision Care

Inventors

• Brennan Noel A
• Chehab Khaled A
• Cheng Xu
• Moody Kurt John
• Roffman Jeffrey H
• Wei Xin

Classifications

• A61F2/16

  Intraocular lenses · CPC title

• G02C7/041

  bifocal; multifocal · CPC title

• A61F2/1618

  Multifocal lenses · CPC title

• G02C7/048

  Means for stabilising the orientation of lenses in the eye · CPC title

• A61F2002/1696

  Having structure for blocking or reducing amount of light transmitted, e.g. glare reduction · CPC title