Multifocal Intraocular Lens

• US 20100100178A1
• Filed: 10/20/2008
• Published: 04/22/2010
• Est. Priority Date: 10/20/2008
• Status: Active Grant

• Current Assignee: Amo Groningen B.V (Johnson & Johnson)
• Original Assignee: Advanced Medical Optics Incorporated (Johnson & Johnson)
• Inventors: Zhao, Huawei, Piers, Patricia Ann, Weeber, Hendrik A., Bandhauer, Mark H., Van Der Mooren, Marrie H.
• Granted Patent: US 8,734,511 B2
• Time in Patent Office: Days
• US Class Current: 623/6.280
• CPC Class Codes: A61F 2/1618 Multifocal lenses
• CPC Class Codes: A61F 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2250/0014 having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
• CPC Class Codes: A61F 2250/0053 differing in optical properties
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 7/042 Simultaneous type
• CPC Class Codes: G02C 7/044 Annular configuration, e.g. pupil tuned
• CPC Class Codes: G02C 7/06 bifocal; multifocal ; progressive G02C7/041 takes precedence

Abstract

An intraocular lens for providing a subject with vision at various distances includes an optic having a first surface with a first shape, an opposing second surface with a second shape, a multifocal refractive profile, and one or more diffractive portions. The optic may include at least one multifocal diffractive profile. In some embodiments, multifocal diffractive and the multifocal refractive profiles are disposed on different, distinct, or non-overlapping portions or apertures of the optic. Alternatively, portions of the multifocal diffractive profiles and the multifocal refractive profiles may overlap within a common aperture or zone of the optic.

Claims

1. An ophthalmic lens, comprising:

an optic comprising a first surface having a first shape and an opposing second surface having a second shape, the shapes together providing a base optic power;

an inner zone disposed about an optical axis, an intermediate zone disposed about the inner zone, and an outer zone disposed about the intermediate zone;

a first diffractive profile imposed on one of the shapes and radially disposed within the inner zone;

a second diffractive profile imposed on one of the shapes and radially disposed within the outer zone;

a multifocal refractive profile imposed on one of the shapes and including a refractive portion radially disposed within the intermediate zone between the first diffractive profile and the second diffractive profile, the multifocal refractive profile including an add portion having refractive add power;

wherein at least one of the diffractive profiles is a multifocal diffractive profile having, for visible light, a primary diffraction order, a secondary diffraction order, and a diffractive add power corresponding to a difference in optical power between the secondary diffraction order and the primary diffraction order.

2. The ophthalmic lens of claim 1, wherein the refractive add power is disposed within the refractive portion of the multifocal refractive add profile

3. The ophthalmic lens of claim 1, wherein the zones are contiguous.

4. The ophthalmic lens of claim 1, further comprising a transition zone disposed between at least one of (1) the inner zone and the intermediate zone and (2) the intermediate zone and the outer zone.

5. The ophthalmic lens of claim 1, wherein the refractive profile includes a base portion having a base refractive power of about zero Diopters.

6. The ophthalmic lens of claim 1, wherein the optical axis passes through the inner zone and the first diffractive profile, the first diffractive profile being the multifocal profile.

7. The ophthalmic lens of claim 1, wherein at least one of the diffractive profiles is imposed on the first shape and the refractive profile is imposed on the second shape.

8. The ophthalmic lens of claim 1, wherein all the profiles are all imposed on only one of the shapes.

9. The ophthalmic lens of claim 1, wherein the first diffractive profile is disposed on a surface opposite second diffractive profile.

10. The ophthalmic lens of claim 1, wherein the primary diffraction order is a zeroth diffraction order having an optical power of about zero Diopters and the secondary diffraction order is a first diffraction order having an optical power that is between about 2 Diopters and about 8 Diopters.

11. The ophthalmic lens of claim 1, wherein the primary diffraction order is a first diffraction order, the secondary diffraction order is a second diffraction, and the add power that is between about 2 Diopter and about 8 Diopters.

12. The ophthalmic lens of claim 1, wherein the first diffractive profile and the second diffractive profile are both multifocal diffractive profiles, a secondary diffraction order of the second diffractive profile having a diffraction efficiency at a visible light design wavelength that is greater than a secondary diffraction order of the first diffractive profile at the design wavelength.

13. The ophthalmic lens of claim 1, wherein the first diffractive profile and the second diffractive profile are both multifocal diffractive profiles, a secondary diffraction order of the first diffractive profile having a diffraction efficiency at a visible light design wavelength that is between 15 percent and 25 percent.

14. The ophthalmic lens of claim 13, wherein a secondary diffraction order of the second diffractive profile has a diffraction efficiency at the design wavelength that is between 25 percent and 25 percent.

15. The ophthalmic lens of claim 1, wherein the diffractive add power is between about 3 Diopters and about 6 Diopters.

16. The ophthalmic lens of claim 1, wherein the diffractive add power is less than about 2 Diopters.

17. The ophthalmic lens of claim 1, wherein the refractive add power is between 1 Diopter and about 4 Diopters.

18. The ophthalmic lens of claim 1, wherein the refractive add power is equal to the diffractive add power.

19. The ophthalmic lens of claim 1, wherein at least one of the shapes is characterized over at least one of the zones by an equation having an asphericity constant, an equation having a higher order polynomial in radius from the optical axis, or an equation having both an asphericity constant and a higher order polynomial in radius from the optical axis.

20. The ophthalmic lens of claim 1, wherein at least one of the zones has a negative spherical aberration.

21. The ophthalmic lens of claim 1, wherein at least one of the zones includes a monofocal diffractive profile imposed on at least one of the shapes.

22. The ophthalmic lens of claim 1, further comprising an additional zone having a multifocal profile, wherein the multifocal profile is a multifocal refractive profile or a multifocal diffractive profile.

23. The ophthalmic lens of claim 22, wherein the additional zone is radially disposed outside the inner zone, outside the intermediate zone, and outside the outer zone.

24. The ophthalmic lens of claim 1, wherein the first diffractive profile is a first multifocal diffractive profile and has zone has a first optical characteristic, the second diffractive profile is a second multifocal diffractive profile and has zone has a second optical characteristic that is different from the first optical characteristic.

25. The ophthalmic lens of claim 24, wherein the first optical characteristic is a first diffractive add power and the second optical characteristic is a second diffractive add power, the first and second diffractive add powers differing by at least 0.25 Diopters.

26. The ophthalmic lens of claim 24, wherein the first optical characteristic is a first step height of echelettes within the inner zone and the second optical characteristic is a second step height of echelettes within the outer zone, the first and second step heights being different.

27. The ophthalmic lens of claim 24, wherein the first optical characteristic is a first chromatic dispersion and the second optical characteristic is a second chromatic dispersion, the first and second chromatic dispersions being different.

28. The ophthalmic lens of claim 24, wherein the first optical characteristic is a first diffraction efficiency at a visible light design wavelength and the second optical characteristic is a second diffraction efficiency at the design wavelength, the first diffraction efficiency being different than the second diffraction efficiency.

29. The ophthalmic lens of claim 1, wherein at least one of the diffractive profiles comprises a plurality of echelettes, each of the echelettes having a different step height, the step heights progressively decreasing with increasing radial distance from the optical axis.

30. An ophthalmic lens, comprising:

an optic comprising a first surface having a first shape and an opposing second surface having a second shape, the shapes together providing a base optic power;

an inner zone disposed about an optical axis, an intermediate zone disposed about the inner zone, and an outer zone disposed about the intermediate zone;

a first diffractive profile imposed on one of the shapes and radially disposed within the inner zone;

a second diffractive profile imposed on one of the shapes and radially disposed within the outer zone;

wherein the intermediate zone is radially disposed between the first and second diffractive profiles, the intermediate zone having a constant refractive optical power;

wherein at least one of the diffractive profiles is a multifocal diffractive profile having, for visible light, a primary diffraction order, a secondary diffraction order, and a diffractive add power corresponding to a difference in optical power between the secondary diffraction order and the primary diffraction order.

31. The ophthalmic lens of claim 30, wherein the lens includes a multifocal refractive profile imposed on one of the shapes.

32. The ophthalmic lens of claim 30, wherein the intermediate zone has a refractive optical power equal to the base optic power.

33. The ophthalmic lens of claim 30, wherein the intermediate zone has an add power greater than or equal two 1.5 Diopters over the base optic power.

34. An ophthalmic lens, comprising:

an optic comprising a first surface having a first shape and an opposing second surface having a second shape, the shapes together providing a base optic power;

a multifocal refractive profile imposed on at least one of the shapes over a first radial extent, the multifocal refractive profile including a refractive base power of about zero Diopters and a refractive add power;

a multifocal diffractive profile imposed on at least one of the shapes over a second radial extent, the multifocal diffractive profile having, for visible light, a primary diffraction order, a secondary diffraction order, and a diffractive add power corresponding to a difference in optical power between the secondary diffraction order and the primary diffraction order;

an overlap portion defining an overlap aperture, the overlap aperture filled by the multifocal refractive profile and the multifocal diffractive profile;

the overlap portion having at least one combined add power provided by a combination of the refractive add power and the diffractive add power.

35. The ophthalmic lens of claim 34, wherein the radial extents begin at the optical axis.

36. The ophthalmic lens of claim 34, wherein the first radial extent equals the second radial extent.

37. The ophthalmic lens of claim 34, wherein the primary diffraction order is a zeroth diffraction order having an optical power of about zero Diopters and the secondary diffraction order is a first diffraction order having an optical power that is between about 2 Diopter and about 8 Diopters.

38. The ophthalmic lens of claim 34, wherein the primary diffraction order is a first diffraction order, the secondary diffraction order is a second diffraction order, and the add power being between about 2 Diopters and 8 Diopters.

39. The ophthalmic lens of claim 34, wherein the overlap aperture has an outer boundary shape, wherein the outer boundary shape is a circle having an outer diameter or an annular ring having an inner diameter and an outer diameter.

40. The ophthalmic lens of claim 34, wherein the optic includes a clear aperture, the multifocal refractive profile filling the entire clear aperture, the multifocal diffractive profile filling the entire clear aperture, or both the multifocal refractive profile and the multifocal diffractive profile fill the entire clear aperture.

41. The ophthalmic lens of claim 34, wherein the optic has an intermediate add power within the overlap aperture that is less than the combined add power, the intermediate add power being the refractive add power or the diffractive add power.

42. The ophthalmic lens of claim 34, wherein the refractive add power is about 2 Diopter, the diffractive add power is about 2 Diopter, and the combined add power is between about 3.5 Diopter and about 4.5 Diopters.

43. The ophthalmic lens of claim 34, wherein refractive add power and the diffractive add power are both between about 1 Diopter and about 3 Diopters.

44. The ophthalmic lens of claim 34, wherein the refractive add power is configured to provide near vision or intermediate vision, the diffractive add power is configured to provide near vision or intermediate vision, or both the refractive add power and the diffractive add power are each configured to provide near vision or intermediate vision.

45. The ophthalmic lens of claim 34, further comprising an additional multifocal profile and an additional overlap portion defining an additional overlap aperture that includes the additional multifocal profile, the additional multifocal profile being a multifocal diffractive profile or a multifocal refractive profile.

46. The ophthalmic lens of claim 45, wherein the additional overlap portion has at least one combined add power provided by the additional multifocal profile in combination with a multifocal profile.

47. An ophthalmic lens, comprising:

an optic comprising a first surface having a first shape and an opposing second surface having a second shape, the shapes together providing a base optic power;

a central zone disposed about and intersecting an optical axis, the central zone including a multifocal diffractive profile imposed on one of the shapes, the multifocal diffractive profile having, for visible light, a primary diffraction order, a secondary diffraction order, and a diffractive add power corresponding to a difference in optical power between the secondary diffraction order and the primary diffraction order; and

a plurality of peripheral zones disposed about the central zone comprising;

a first peripheral zone including a multifocal refractive profile imposed on one of the shapes having at least a first refractive power and a second refractive power;

a second peripheral zone including a diffractive profile imposed on one of the shapes.

48. The ophthalmic lens of claim 47, wherein the first peripheral zone is disposed about the central zone and second peripheral zone is disposed about the first peripheral zone.

49. The ophthalmic lens of claim 47, wherein the second peripheral zone is disposed about the central zone and first peripheral zone is disposed about the second peripheral zone.

50. The ophthalmic lens of claim 47, wherein the diffractive profile of the second peripheral zone is a monofocal profile having only one diffraction order in the visible waveband of the electromagnetic spectrum.

51. The ophthalmic lens of claim 47, wherein the diffractive profile of the second peripheral zone is a multifocal diffractive profile having, for visible light, a primary diffraction order, a secondary diffraction order, and a diffractive add power corresponding to a difference in optical power between the secondary diffraction order and the primary diffraction order.

52. The ophthalmic lens of claim 47, wherein the first refractive power and the second refractive power of the first peripheral zone differ by at least 1.5 Diopters

53. The ophthalmic lens of claim 47, wherein the plurality of peripheral zones comprises a third peripheral zone disposed about the first and second peripheral zones, the third peripheral zone including a profile, the profile of the third peripheral zone being a diffractive profile or a multifocal refractive profile.

54. The ophthalmic lens of claim 47, wherein the plurality of peripheral zones comprise at least a third peripheral zone disposed about the first and second peripheral zones, the third peripheral zone having a constant refractive optical power and no diffractive optical power.

55. The ophthalmic lens of claim 47, wherein the multifocal diffractive profile of the central zone has a first optical characteristic, the diffractive profile of the second peripheral zone is a multifocal diffractive profile having a second optical characteristic, and the first optical characteristic is different from the second optical characteristic.

56. The ophthalmic lens of claim 53, wherein the first optical characteristic is a first diffractive add power and the second optical characteristic is a second diffractive add power, the first and second diffractive add powers differing by at least 0.25 Diopters.

57. The ophthalmic lens of claim 53, wherein the first optical characteristic is a first diffractive add power and the second optical characteristic is a second diffractive add power, the first and second diffractive add powers differing by at least 0.25 Diopters.

58. The ophthalmic lens of claim 53, wherein the first optical characteristic is a first step height of echelettes within the first peripheral zone and the second optical characteristic is a second step height of echelettes within the second peripheral zone, the first and second step heights being different.

59. The ophthalmic lens of claim 53, wherein the first optical characteristic is a first chromatic dispersion and the second optical characteristic is a second chromatic dispersion, the first and second chromatic dispersions being different.

60. The ophthalmic lens of claim 53, wherein the first optical characteristic is a first diffraction efficiency at a design wavelength and the second optical characteristic is a second diffraction efficiency at the design wavelength, the first diffraction efficiency being different than the second diffraction efficiency.

61. The ophthalmic lens of claim 47, wherein at least one of the diffractive profiles comprises a plurality of echelettes, each of the echelettes having a different step height, the step heights decreasing with increasing radial distance from the optical axis.