Microincision lens and method for inserting same

Patent metadata

Field	Value
Publication number	US-9474595-B2
Application number	US-201514668552-A
Country	US
Kind code	B2
Filing date	Mar 25, 2015
Priority date	Sep 3, 2010
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A foldable lens comprises an outer refractive surface portion comprising a first plurality of convexly curved refractive profile regions having positive optical power to converge light energy with refraction toward a focus on the retina. The convexly curved refractive profile regions of the outer region may correspond to at least about a quarter of the refractive power of the lens, such that the lens thickness is decreased substantially and the folded lens can fit through a small incision. The outer refractive surface portion focuses light with refraction, in focus images viewed through the outer portion of the lens can appear sharp to the patient. The outer refractive surface portion also comprises a second plurality of concavely curved refractive profile regions having negative optical power disposed between the first plurality, so as to diverge the light energy substantially away from the focus on the retina, such that visual artifacts are inhibited.

First claim

What is claimed is:

1. A method of treating an eye of a patient having a retina, the method comprising:
inserting an intraocular lens (IOL) having a folded elongate narrow profile configuration through an incision of the eye; and
positioning the IOL to correct vision with an expanded wide profile configuration such that an inner optical surface portion of the IOL refracts light toward a focus on the retina and at least a portion of an outer refractive surface portion of the IOL refracts light away from the focus on the retina, the outer refractive surface portion including a first plurality of convexly curved refractive profile regions comprised of a convex set radius of curvature and a second plurality of concavely curved refractive profile regions comprised of a concave set radius of curvature, and wherein the inner optical surface portion has a center, and wherein each of the first plurality of convexly curved refractive profile regions is an annular region, and each of the first plurality of convexly curved refractive profile regions is concentric to the center of the inner optical surface portion.

2. The method of claim 1 , wherein the first plurality of convexly curved refractive profile regions has positive optical power and the second plurality of concavely curved refractive profile regions has negative optical power and wherein each of the concavely curved refractive profile regions has sufficient optical power to refract light away from the focus on the retina such that patient perceptible artifacts are inhibited when the eye views a light source at night.

3. The method of claim 1 , wherein the incision comprises a length of no more than about 2 mm across and wherein the elongate narrow profile configuration has a maximum distance across of no more than about 2 mm when the IOL has an optical power of at least about +5 D.

4. The method of claim 1 , wherein the incision comprises a length of no more than about 2 mm across and wherein the elongate narrow profile configuration has a maximum distance across of no more than about 2 mm when the IOL has an optical power of at least about +15 D.

5. The method of claim 3 , wherein the IOL comprises an optically used portion having a distance across of at least about 5 mm and wherein a central thickness of the optically used portion comprises no more than about 0.7 mm.

6. The method of claim 1 , wherein the inner optical surface portion and the outer refractive surface portion are located on a first side of the IOL opposite a second side of the IOL and wherein the first side comprises an anterior side and the second side comprises a posterior side when positioned in the eye.

7. The method of claim 6 , wherein the second side comprises a second optical surface optically coupled to the inner optical surface portion and the outer refractive surface portion.

8. The method of claim 7 , wherein the second optical surface comprises an aspheric surface.

9. The method of claim 7 , wherein the second optical surface comprises a convex refractive surface profile having a positive optical power optically coupled to the inner optical surface portion and the outer refractive surface portion and wherein each of the concavely curved refractive profile regions comprises a negative optical power stronger than the positive optical power of the convex refractive surface profile to diverge light away from the focus when placed in the eye.

10. The method of claim 9 , wherein each of the convexly curved refractive profile regions comprises a positive optical power coupled to the positive optical power of the convex refractive surface profile to direct light toward the focus and wherein the negative optical power of each of the concavely curved refractive profile regions is stronger than the positive optical power of each of the convexly curved refractive profile regions.

11. The method of claim 9 , wherein the convex refractive surface profile of the second side comprises a diffractive profile disposed thereon.

12. The method of claim 11 , wherein the diffractive profile comprises one or more of a monofocal diffractive profile having positive optical power to correct chromatic aberration of the eye or a multifocal diffractive profile having positive optical power to correct chromatic aberration and increase a depth of field of the focus of the eye.

13. The method of claim 9 , wherein the convex refractive surface profile comprises one or more of a spherical surface, a toric surface, an aspheric surface, a conic constant, a fourth order spherical aberration correction or a sixth order spherical aberration correction to correct monochromatic aberration of the eye.

14. The method of claim 1 , wherein the inner optical surface portion comprises a convex refractive surface profile.

15. The method of claim 1 , wherein the first plurality of convexly curved refractive profile regions is configured to converge light towards the focus on the retina, and the second plurality of concavely curved refractive profile regions is configured to diverge light away from the focus on the retina.

16. The method of claim 1 , wherein the first plurality of convexly curved refractive profile regions comprises first annular regions and wherein the second plurality of concavely curved refractive profile regions comprises second annular regions disposed between the first annular regions.

17. The method of claim 1 , wherein the IOL has at least two haptics.

18. The method of claim 1 , wherein at least a portion of the IOL is made of an optically transparent foldable material.

19. The method of claim 1 , wherein at least a portion of the IOL is made of a soft acrylic material.

Assignees

• Abbott Medical Optics Inc

Inventors

• Zhao Huawei

Classifications

• A61F2/1654 Primary

  Diffractive lenses · CPC title

• A61F2/1656

  Fresnel lenses, prisms or plates · CPC title

• A61F2/1613 Primary

  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 title

• A61F2/1637

  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 title

• A61F2002/169053

  Segments fold · CPC title