FULL DEPTH OF FOCUS INTRAOCULAR LENS

• US 20190314148A1
• Filed: 04/11/2019
• Published: 10/17/2019
• Est. Priority Date: 04/12/2018
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon Incorporated
• Inventors: Liu, Yueai
• Granted Patent: US 11,751,990 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1618 Multifocal lenses
• CPC Class Codes: A61F 2/1621 enabling correction for monovision
• CPC Class Codes: A61F 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2002/1683 having filiform haptics
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 7/04 Contact lenses for the eyes disinfection or sterilisation of contact lenses A61L12/00

Abstract

An ophthalmic lens 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. A first microstructure pattern formed in a the first surface region, the first microstructure pattern introducing a phase perturbation into an optical path of incoming light such that a full depth of focus for photopic vision is provided.

Claims

1. An ophthalmic lens 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 a the first surface region, the first microstructure pattern introducing a phase perturbation into an optical path of incoming light such that a full depth of focus for photopic vision is provided.

2. The ophthalmic lens of claim 1, wherein the second surface region is refractive and provides monofocal vision in the mesopic aperture.

3. The ophthalmic lens of claim 1, further comprising a second microstructure pattern formed in the second surface region, the second microstructure pattern configured to provide bifocal vision in the mesopic aperture.

4. The ophthalmic lens of claim 1, further comprising a second microstructure pattern formed in the second surface region, the second microstructure pattern is configured to provide trifocal vision in the mesopic aperture.

5. The ophthalmic lens of claim 1, wherein the first microstructure pattern is defined by a step pattern.

6. The ophthalmic lens of claim 5, wherein the step pattern is defined by a step height, a step width, and a phase value.

7. An intraocular lens comprising:

a first microstructure pattern for extending depth of focus of visible light along an optical axis of the intraocular lens, the first microstructure pattern formed in a first surface region of the optic zone corresponding to a photopic aperture of the pupil.

8. The intraocular lens of claim 7, further comprising a second surface region of the optic zone corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil, wherein the second surface region is refractive.

9. The intraocular lens of claim 7, further comprising a second microstructure pattern formed in a second surface region of the optic zone corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil, wherein the second microstructure pattern comprises a bifocal diffractive structure.

10. The intraocular lens of claim 7, further comprising a second microstructure pattern formed in a second surface region of the optic zone corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil, wherein the second microstructure pattern comprises a trifocal diffractive structure.

11. The intraocular lens of claim 7, further comprising a second microstructure pattern formed in a second surface region of the optic zone corresponding to a difference between the photopic aperture and a mesopic aperture of the pupil, wherein the first microstructure pattern is defined by a first step pattern and the second microstructure pattern is defined by a second step pattern.

12. The ophthalmic lens of claim 11, wherein the first step pattern is defined by a first step height, a first step width, and a first phase value;

and

the second step pattern is defined by a second step height, a second step width, and a second phase value.