Multifocal ophthalmic lens

• US 10,085,833 B2
• Filed: 04/26/2017
• Issued: 10/02/2018
• Est. Priority Date: 11/29/2002
• Status: Expired due to Term

• Current Assignee: Amo Groningen B.V (Johnson & Johnson)
• Original Assignee: Amo Groningen B.V (Johnson & Johnson)
• Inventors: Piers, Patricia Ann, Weeber, Hendrik A., Norrby, Sverker
• Primary Examiner(s): Matthews, Howie
• Application Number:
  US15/498,269
• Publication Number:
  US 20170224474A1
• Time in Patent Office: 524 Days
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• 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 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2002/1696 Having structure for blocking or reducing amount of light transmitted, e.g. glare reduction
• CPC Class Codes: A61F 2240/002 Designing or making customized prostheses
• CPC Class Codes: G01J 9/00 Measuring optical phase difference devices or arrangements for controlling the phase of light beams G02F1/01; Determining degree of coherence; Measuring optical wavelength spectrometry G01J3/00
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 2202/22 Correction of higher order and chromatic aberrations, wave front measurement and calculation
• CPC Class Codes: G02C 7/027 considering wearer's parameters
• CPC Class Codes: G02C 7/028 Special mathematical design techniques
• CPC Class Codes: G02C 7/041 bifocal; multifocal
• CPC Class Codes: G02C 7/06 bifocal; multifocal ; progressive G02C7/041 takes precedence

Abstract

A method of designing a multifocal ophthalmic lens with one base focus and at least one additional focus, capable of reducing aberrations of the eye for at least one of the foci after its implantation, comprising the steps of: (i) characterizing at least one corneal surface as a mathematical model; (ii) calculating the resulting aberrations of said corneal surface(s) by employing said mathematical model; (iii) modelling the multifocal ophthalmic lens such that a wavefront arriving from an optical system comprising said lens and said at least one corneal surface obtains reduced aberrations for at least one of the foci. There is also disclosed a method of selecting a multifocal intraocular lens, a method of designing a multifocal ophthalmic lens based on corneal data from a group of patients, and a multifocal ophthalmic lens.

Claims

1. An intraocular lens comprising:

an anterior surface and an opposing posterior surface;

wherein at least one of the surfaces of the intraocular lens is a prolate surface characterized by an equation

2. The intraocular lens of claim 1, wherein the values were calculated for a model cornea having two surfaces with a refractive index of 1.3375.

3. The intraocular lens of claim 2, wherein the lens is a biconvex lens.

4. The intraocular lens of claim 2, wherein the lens comprises a thickness of about 1.1 mm.

5. The intraocular lens of claim 2, wherein the lens is a silicone lens.