Diffractive Intraocular Lens

• US 20080300679A1
• Filed: 06/01/2007
• Published: 12/04/2008
• Est. Priority Date: 06/01/2007
• Status: Abandoned Application

• Current Assignee: Bausch & Lomb Incorporated (Bausch Health Cos., Inc.)
• Original Assignee: Bausch & Lomb Incorporated (Bausch Health Cos., Inc.)
• Inventors: Altmann, Griffith E.
• Application Number:
  US11/756,973
• Publication Number:
  US 20080300679A1
• Time in Patent Office: Days
• US Class Current: 623/6.31
• CPC Class Codes: A61F 2/1627 for changing index of refraction, e.g. by external means or by tilting
• CPC Class Codes: A61F 2/1654 Diffractive lenses

Abstract

An IOL, comprising a first diffractive region, and a second diffractive region having a power of a different magnitude than the first diffractive region, the first region adapted to diffract substantially all light at a first selected wavelength projected therethrough into a single order of diffraction, and the second region adapted to diffract substantially all light at a second selected wavelength projected therethrough into a single order of diffraction.

Claims

1. An IOL, comprising:

a first diffractive region; and

a second diffractive region having a power of a different magnitude than the first diffractive region, the first region adapted to diffract substantially all light at a first selected wavelength projected therethrough into a single non-zero order of diffraction, and the second region adapted to diffract substantially all light at a second selected wavelength projected therethrough into a single non-zero order of diffraction.

2. The IOL of claim 1, further comprising a third diffractive region having a power of different magnitude than the first and the second regions, adapted to diffract substantially all light at a third selected wavelength projected therethrough into a corresponding single non-zero order of diffraction.

3. The IOL of claim 1, wherein the first region and the second region project light into corresponding first orders of diffraction.

4. The IOL of claim 1, wherein the first and second regions are disposed concentrically.

5. The IOL of claim 1, wherein the IOL comprises one or more haptics.

6. The IOL of claim 1, wherein the IOL is made of a material comprising at least one of silicone, PMMA, foldable hydrophilic acrylic and foldable hydrophobic acrylic.

7. The IOL of claim 4, further comprising a third region that is concentric with the first and second regions, wherein the first region, the second region, and the third region form alternating regions of near and far focus.

8. The IOL of claim 1, wherein the first selected wavelength and the second selected wavelength are at substantially a same wavelength in the visible spectrum.

9. The IOL of claim 1, wherein the first selected wavelength and the second selected wavelength are at a same wavelength in the visible spectrum.

10. The IOL of claim 1, wherein the same wavelength is approximately 555 nm.

11. A method, comprising:

projecting light of a selected wavelength onto a first diffractive region and a second diffractive region of an IOL, the first region having a first diffractive optical power and the second region having a second diffractive optical power of a different magnitude than the first diffractive optical power;

diffracting substantially all light of a first selected wavelength projected onto the first region into a single non-zero order of diffraction; and

diffracting substantially all light of a second selected wavelength projected onto the second region into a single non-zero order of diffraction.

12. The method of claim 11, wherein the first selected wavelength and the second selected wavelength are at substantially a same wavelength in the visible spectrum.

13. The method of claim 11, wherein the first selected wavelength and the second selected wavelength are at a same wavelength in the visible spectrum.

14. The method of claim 13, wherein the same wavelength is approximately 555 nm.