FRESNEL PIGGYBACK INTRAOCULAR LENS THAT IMPROVES OVERALL VISION WHERE THERE IS A LOCAL LOSS OF RETINAL FUNCTION

• US 20160067037A1
• Filed: 09/09/2015
• Published: 03/10/2016
• Est. Priority Date: 03/10/2014
• Status: Active Grant

• Current Assignee: Amo Groningen B.V (Johnson & Johnson)
• Original Assignee: Amo Groningen B.V (Johnson & Johnson)
• Inventors: Rosen, Robert, Weeber, Hendrik A., Canovas Vidal, Carmen, Van Der Mooren, Marrie, Sellitri, Dora, Piers, Patricia Ann
• Granted Patent: US 10,143,548 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/028 for testing visual acuity; for determination of refraction, e.g. phoropters
• CPC Class Codes: A61B 3/1005 for measuring distances inside the eye, e.g. thickness of the cornea A61B3/11 takes precedence
• CPC Class Codes: A61B 3/103 for determining refraction, e.g. refractometers, skiascopes
• CPC Class Codes: A61B 3/107 for determining the shape or measuring the curvature of the cornea
• CPC Class Codes: A61B 3/14 Arrangements specially adapted for eye photography apparatus or arrangements for taking photographs per se G03B
• CPC Class Codes: A61F 2/1602 Corrective lenses for use in addition to the natural lenses of the eyes or for pseudo-phakic eyes
• CPC Class Codes: A61F 2/1605 Anterior chamber lenses for use in addition to the natural lenses of the eyes, e.g. iris fixated, iris floating
• 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 2/1637 Correcting aberrations caused by inhomogeneities; correcting intrinsic aberrations, e.g. of the cornea, of the surface of the natural lens, aspheric, cylindrical, toric lenses
• CPC Class Codes: A61F 2/164 Aspheric lenses
• CPC Class Codes: A61F 2/1645 Toric lenses
• CPC Class Codes: A61F 2/1648 Multipart lenses
• CPC Class Codes: A61F 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2/1656 Fresnel lenses, prisms or plates
• CPC Class Codes: A61F 2/1659 having variable absorption coefficient for electromagnetic radiation, e.g. photochromic lenses
• CPC Class Codes: A61F 2002/1681 having supporting structure for lens, e.g. haptics
• CPC Class Codes: A61F 2240/002 Designing or making customized prostheses

Abstract

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing a piggyback lens which in combination with the cornea and an existing lens in the patient'"'"'s eye redirects and/or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The piggyback lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the piggyback lens can be configured to improve or reduce optical errors at the location on the peripheral retina. One or more surfaces of the piggyback lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles. One or more surfaces of the piggyback lens can be faceted.

Claims

1. An ophthalmic lens configured to improve vision for a patient'"'"'s eye, the lens comprising:

an optic with a first surface and a second surface opposite the first surface, wherein the optic together with a cornea and an existing lens in the patient'"'"'s eye is configured to improve image quality of an image produced by light incident on the patient'"'"'s eye in an angular range between about 1 degree and about 50 degrees with respect to the optical axis and focused at a peripheral retinal location disposed at a distance from the fovea, wherein one or both of the first or the second surface is faceted, and

wherein a curvature of the first surface and a curvature of the second surface are configured such that the optic has an optical power that is less than 0.25 Diopters.

2. The lens of claim 1, wherein the image quality is improved by reducing coma at the peripheral retinal location.

3. The lens of claim 1, wherein the image quality is improved by reducing oblique astigmatism at the peripheral retinal location.

4. The lens of claim 1, configured to improve image quality of an image produced by light incident on the patient'"'"'s eye in an angular range between about 5 degrees and about 30 degrees with respect to the optical axis.

5. The lens of claim 1, wherein one or both of the first or the second surface is a toric surface, an aspheric, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike.

6. The lens of claim 1, wherein a thickness of the optic varies about a periphery of the optic.

7. The intraocular lens of claim 1, wherein the image has a modulation transfer function (MTF) of at least 0.3 for a spatial frequency of 30 cycles/mm for both the tangential and the sagittal foci at the peripheral retinal location.

8. The intraocular lens of claim 1, wherein the image has a modulation transfer function (MTF) of at least 0.5 for a spatial frequency of 100 cycles/mm for both the tangential and the sagittal foci at the fovea.

9. The lens of claim 1, wherein the optic includes an optical axis that intersects the first and the second surface and a thickness of the optic along the optical axis is between about 0.1 mm and about 0.9 mm.

10. The lens of claim 9, wherein the optic is symmetric about the optical axis of the optic.

11. The lens of claim 9, wherein the optic is asymmetric about the optical axis of the optic.

12. The lens of claim 1, wherein the optic is configured to be implanted between the iris and the existing lens.

13. The lens of claim 12, wherein the optic is configured to be in the sulcus.

14. The lens of claim 1, wherein the existing lens is configured to provide foveal vision.

15. The intraocular lens of claim 1, wherein the optic includes diffractive features.

16. The intraocular lens of claim 1, wherein the optic includes prismatic features.

17. A method of selecting an intraocular lens (IOL) configured to be implanted in a patient'"'"'s eye, the method comprising:

obtaining at least one characteristic of the patient'"'"'s eye using a diagnostic instrument; and

selecting an IOL having a first surface and a second surface opposite the first surface, one or both of the first and the second surface having an asphericity that reduces optical errors in an image produced at a peripheral retinal location of the patient'"'"'s eye disposed at a distance from the fovea, wherein the image is produced by focusing light incident on the patient'"'"'s eye in an angular range between about 1 degree and about 50 degrees with respect to an optical axis intersecting the patient'"'"'s eye at the peripheral retinal location by a combination of the optic, an existing lens and the patient'"'"'s cornea,

wherein at least one of the first or the second surface is faceted, and

wherein a curvature of the first surface and a curvature of the second surface are configured such that the IOL has an optical power that is substantially 0 Diopter.

18. The method of claim 17, wherein the obtained characteristic includes axial length along the optical axis of the patient'"'"'s eye and corneal power.

19. The method of claim 17, wherein the obtained characteristic is selected from the group consisting of axial length along the optical axis of the patient'"'"'s eye, corneal power based at least in part on measurements of topography of the cornea, an axial length along an axis which deviates from the optical axis and intersects the retina at the peripheral retinal location, a shape of the retina, and a measurement of optical errors at the peripheral retinal location.

20. The method of claim 17, wherein at least one of the surfaces of the IOL includes a redirecting element.

21. The method of claim 20, wherein the redirecting element comprises a diffractive feature.

22. The method of claim 20, wherein the redirecting element comprises a prismatic feature.

23. The method of claim 17, wherein the image has reduced coma.

24. The method of claim 17, wherein the image has reduced astigmatism.

25. The method of claim 17, wherein the IOL is configured such that the image has a modulation transfer function (MTF) of at least 0.3 for a spatial frequency of 30 cycles/mm for both tangential and sagittal foci.