Toric lens with decreased sensitivity to cylinder power and rotation and method of using the same

• US 9,987,127 B2
• Filed: 12/18/2015
• Issued: 06/05/2018
• Est. Priority Date: 08/27/2007
• Status: Active Grant

• Current Assignee: Amo Groningen B.V (Johnson & Johnson)
• Original Assignee: Amo Groningen B.V (Johnson & Johnson)
• Inventors: Bogaert, Theophilus, Weeber, Hendrik A., Zhao, Huawei
• Primary Examiner(s): Willse, David H
• Assistant Examiner(s): SHIPMON, TIFFANY P
• Application Number:
  US14/975,364
• Publication Number:
  US 20160100938A1
• Time in Patent Office: 900 Days
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61F 2/1645 Toric lenses
• CPC Class Codes: A61F 2/1654 Diffractive lenses
• CPC Class Codes: A61F 2002/1699 Additional features not otherwise provided for
• CPC Class Codes: A61F 9/013 Instruments for compensation of ocular refraction A61F9/008 takes precedence; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea
• CPC Class Codes: G02B 27/0075 with means for altering, e.g. increasing, the depth of field or depth of focus
• CPC Class Codes: G02B 3/06 with cylindrical or toric faces
• CPC Class Codes: G02C 2202/02 Mislocation tolerant lenses or lens systems
• CPC Class Codes: G02C 2202/06 Special ophthalmologic or optometric aspects
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses
• CPC Class Codes: G02C 7/027 considering wearer's parameters
• CPC Class Codes: G02C 7/041 bifocal; multifocal
• CPC Class Codes: G02C 7/06 bifocal; multifocal ; progressive G02C7/041 takes precedence

Abstract

A method, system and apparatus for vision correction are disclosed. The method, system and apparatus include a toric intraocular element for correcting astigmatism and having a cylinder power, and a depth of focus extender coupled to the toric intraocular element, the depth of focus extender extending a depth of focus. The extended depth of focus may reduce sensitivity of the toric intraocular element to at least one of rotation and selected cylinder power.

Claims

1. An intraocular lens, comprising:

an optic comprising a first surface having a first shape and an opposing second surface having a second shape, the first and second shapes providing a refractive power;

a diffractive pattern imposed on at least one of the first shape and the second shape;

the first and second surfaces providing a base power and an add power;

wherein, when the optic is placed in an intraocular lens plane of a physical eye model including a model cornea, the modulation transfer function of the eye model exceeds about 0.17, at a spatial frequency of about 50 line pairs per millimeter, over a range of at least about 1.7 Diopters.

2. An intraocular lens, comprising:

a first surface having a first shape and an opposing second surface having a second shape, the first and second shapes providing a refractive power;

a diffractive pattern imposed on the first shape or the second shape;

the first and second surfaces providing a base power and an add power;

the intraocular lens having a depth of focus, when illuminated by a light source, that is at least about 30% greater than that of an intraocular reference lens without the diffractive pattern, the intraocular reference lens having a refractive power that is equal to the base power of the intraocular lens.

3. The intraocular lens of claim 2, wherein the light source is a polychromatic light source.

4. The intraocular lens of claim 2, wherein the light source is at a predetermined wavelength and the intraocular lens has a depth of focus, when illuminated at the predetermined wavelength, that is at least about 50% greater than that of the intraocular reference lens.

5. The intraocular lens of claim 2, wherein, at a spatial frequency of about 50 line pairs per millimeter, the modulation transfer function of the lens exceeds 0.17 over a depth of focus that is greater than the depth of focus for the reference intraocular lens by at least about 0.5 Diopters.

6. The intraocular lens of claim 2, wherein the intraocular lens is optically described by a model lens, such that when the model lens is included in an intraocular lens plane of an eye model including a model cornea, the modulation transfer function of the eye model exceeds about 0.17, at a spatial frequency of about 50 line pairs per millimeter, over a range of at least about 1.7 Diopters.