# US 2017/0245986 A1 · Progressive power intraocular lens, and methods of use and manufacture

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- Number: US 2017/0245986 A1
- Document ID: US20170245986A1
- Status: Published application
- Kind: A1
- Application number: 15/429,100
- Filed: 2017-02-09
- Published: 2017-08-31
- Earliest claimed: 2016-02-09
- Assignees: AMO Groningen B.V.
- Applicants: AMO Groningen B.V.
- Inventors: Carmen Canovas Vidal; Aixa Alarcon Heredia; Patricia Ann Piers; Hendrik A. Weeber
- Web page: https://patentgrep.com/patent/US20170245986A1

## CPC

- A61F 2/1654: {Diffractive lenses}
- A61F 2/1618: {Multifocal lenses}
- 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}
- A61F 2/164: {Aspheric lenses}
- B29D 11/00019: {with non-spherical faces, e.g. toric faces}
- G02B 27/0075: {with means for altering, e.g. increasing, the depth of field or depth of focus}
- G02C 7/027: {considering wearer's parameters}
- G02C 7/028: {Special mathematical design techniques}
- G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00)
- G02C 7/044: {Annular configuration, e.g. pupil tuned}
- G02C 7/066: {Shape, location or size of the viewing zones}
- G02C 7/068: {Special properties achieved by the combination of the front and back surfaces}
- G02C 2202/20: Diffractive and Fresnel lenses or lens portions
- G02C 2202/22: Correction of higher order and chromatic aberrations, wave front measurement and calculation
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00)

## Abstract

Apparatuses, systems and methods for providing improved intraocular lenses (IOLs), include features for reducing side effects, such as halos, glare and best focus shifts, in multifocal refractive lenses and extended depth of focus lenses. Exemplary ophthalmic lenses can include a continuous, power progressive aspheric surface based on two or more merged optical zones, the aspheric surface being defined by a single aspheric equation. Continuous power progressive intraocular lenses can mitigate optical side effects that typically result from abrupt optical steps. Aspheric power progressive and aspheric extended depth of focus lenses can be combined with diffractive lens profiles to further enhance visual performance while minimizing dysphotopsia effects. The combination can provide an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile

## Claims

### Claim 1

An ophthalmic lens, comprising:
a first surface and a second surface disposed about an optical axis, the lens being characterized by an extended depth of focus; and
a refractive profile imposed on one of the first surface or the second surface; and
a diffractive profile imposed on one of the first surface or the second surface;
wherein the refractive profile comprises a continuous high order aspheric surface profile that results in a radial power progressive lens; and
wherein the combination of the refractive profile and diffractive profile provides an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.

### Claim 2 (depends on 1)

The lens of claim 1, wherein the diffractive profile affects chromatic aberration.

### Claim 3 (depends on 1)

The lens of claim 1, wherein the diffractive profile has a phase delay greater than 1 k.

### Claim 4 (depends on 1)

The lens of claim 1, wherein the diffractive profile overlaps the refractive profile.

### Claim 5 (depends on 1)

The lens of claim 1, wherein the refractive profile and the diffractive profile occupy an entire optical area of the lens.

### Claim 6 (depends on 1)

The lens of claim 1, wherein the refractive profile results in a continuous optical power progression.

### Claim 7 (depends on 1)

The lens of claim 1, wherein the refractive profile comprises:
a first region of the lens approximating a first optical regime; and
a second region of the lens approximating a second optical regime; wherein
the first region comprises a first range of optical power values and the second optical regime comprises a second range of optical power values different than the first range,
the first and second regions are radially symmetric and concentric about an optical axis of the lens, the second region being disposed around the first region, and
the first and second regions are merged by the continuous aspheric lens function.

### Claim 8 (depends on 1)

The lens of claim 1, wherein the diffractive profile comprises a set of echelettes, each echelette of the set having the same phase delay.

### Claim 9 (depends on 1)

The lens of claim 1, wherein the diffractive profile comprises a first set of echelettes each having a respective first phase delay, and a second set of echelettes each having a respective second phase delay, the first and second phase delays being different from one another.

### Claim 10 (depends on 1)

The lens of claim 1, wherein the diffractive profile comprises at least one central echelette having a first phase shift, and at least one echelette of a remainder of the echelettes having a second phase shift, the first phase shift being at least 0.1 to 0.5λ greater or smaller than the second phase shift.

### Claim 11 (depends on 1)

The lens of claim 1, wherein the refractive profile is generated by a method comprising:
defining a first optical zone configured to place a first focal distance of the lens a first distance behind the lens based on a first set of criteria;
defining a second optical zone configured to place a second focal distance a second distance behind the lens, the second optical zone being different from the first optical zone;
merging the first optical zone with the second optical zone, such that a first elevation of an outer periphery of the first optical zone corresponds to a second elevation of an inner periphery of the second optical zone; and
generating the continuous high order aspheric surface based on the merged first optical zone and second optical zone, the continuous high order aspheric surface being defined by a single aspheric equation, such that the aspheric surface approximates the first optical zone across a first region of the lens and approximates the second optical zone across a second region of the lens, and such that the intraocular lens power profile varies smoothly with a radial distance from the center of the lens from a maximum power at a center of the lens to a base power at a periphery of the lens.

### Claim 12 (depends on 1)

A manufacturing system, comprising
a manufacturing assembly that fabricates the ophthalmic lens of claim 1.

### Claim 13

A ophthalmic lens, comprising:
a first surface and a second surface disposed about an optical axis, the lens being characterized by an extended depth of focus; and
a refractive profile imposed on one of the first surface or the second surface; and
a diffractive profile imposed on one of the first surface or the second surface;
wherein the refractive profile comprises a high order aspheric surface profile that results in a continuous optical power progression;
wherein the diffractive profile comprises at least one set of diffractive zones that partially corrects for ocular chromatic aberration; and
wherein the combination of the refractive profile and diffractive profile provides an increased depth of focus that is greater than an individual depth of focus of either the refractive profile or the diffractive profile.

### Claim 14 (depends on 13)

The lens of claim 13, wherein:
the continuous optical power progression comprises a radial power progression that varies smoothly with a radial distance from a center of the refractive profile from a maximum power at the center of the refractive profile to a base power at a periphery of the refractive profile.

### Claim 15 (depends on 13)

The lens of claim 13, wherein the high order aspheric surface profile is defined by the following equation for tangential sag of the surface:
Z=cr2/1+√{square root over (1−(k+1)c2r2)}+a2r2+a4r4a6r6+a8r8+a10r10+a12r12
and wherein at least one of the a10 or a12 coefficients is nonzero.

### Claim 16 (depends on 15)

The lens of claim 15, wherein the coefficients corresponding to the high order aspheric surface profile can be varied to increase or decrease a steepness of the optical power progression.

### Claim 17 (depends on 13)

The lens of claim 13, wherein:
the first surface is a posterior surface of the lens and the second surface is an anterior surface of the lens; and
the diffractive profile is disposed on the first surface and the refractive profile is disposed on the second surface.

### Claim 18 (depends on 13)

The lens of claim 13, wherein
the first surface is a posterior surface of the lens and the second surface is an anterior surface of the lens; and
the diffractive profile and the refractive profile are disposed on one of the first or second surfaces.

### Claim 19 (depends on 13)

The lens of claim 13, wherein the diffractive profile comprises a plurality of echelettes, and wherein a subset of the plurality of echelettes are configured to divert light to an extended depth of focus.

### Claim 20 (depends on 13)

The lens of claim 13, wherein the lens comprises an intraocular implant.

### Claim 21 (depends on 13)

The lens of claim 13, further comprising one or more support elements configured to secure the lens to a patient's eye.