Lenses, devices, systems and methods for refractive error

Patent metadata

Field	Value
Publication number	US-9759930-B2
Application number	US-201514884533-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Oct 17, 2012
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.

First claim

The invention claimed is:

1. A lens for an eye, the lens comprising:
an optical axis;
an aberration profile about the optical axis and having a focal distance;
at least two optical surfaces;
wherein the lens's optical properties can be characterised upon testing by at least the following properties: two or more higher order aberrations having one or more of the following components: a primary spherical aberration C(4,0), a secondary spherical aberration C(6,0), a tertiary spherical aberration C(8,0), a quaternary spherical aberration C(10,0), a pentanary spherical aberration C(12,0), a hexanary spherical aberration C(14,0), a heptanary spherical aberration C(16,0), an octanary spherical aberration C(18,0) and a nanonary spherical aberration C(20,0); the aberration profile when tested on a model eye with no, or substantially no, aberrations and having an on-axis length equal, or substantially equal, to the focal distance, results in a through focus RIQ, within the through focus range, a first RIQ which is a peak RIQ of at least 0.25 and that remains at or above a second RIQ over the through focus range that includes the focal distance; and the first and second RIQs are measured for a model eye with no, or substantially no, aberration and is measured along the optical axis for at least one pupil diameter in the range 3 mm to 5 mm, over a spatial frequency range of 0 to 30 cycles/degree inclusive, at a wavelength selected from within the range 540 nm to 590 nm inclusive.

2. The lens of claim 1 , wherein the lens is further characterised by minimal ghosting at near, intermediate and far distances.

3. The lens of claim 1 , wherein the primary or secondary astigmatism is added to the desired aberration profile by altering one or more of the following terms: C(2,−2), C(2,2), C(4,−2), C(4,2), C(6,−2) and/or C(6,2).

4. The lens of claim 1 , wherein the RIQ is characterised by

RIQ
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Assignees

• Holden Brien Vision Inst

Inventors

• Bakaraju Ravi Chandra
• Ehrmann Klaus
• Ho Arthur
• Holden Brien Anthony

Classifications

• A61F2/145

  Corneal inlays, onlays, or lenses for refractive correction · 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

• G02C7/04 Primary

  Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) · CPC title

• G02C7/022

  Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence) · CPC title

• A61F2/1618

  Multifocal lenses · CPC title