# US 2014/0152953 A1 · Lenses

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- Number: US 2014/0152953 A1
- Document ID: US20140152953A1
- Status: Published application
- Kind: A1
- Application number: 13/980,279
- Filed: 2012-01-18
- Published: 2014-06-05
- Earliest claimed: 2011-01-18
- Assignees: Optometric Technology Group LTD.
- Applicants: Optometric Technology Group Ltd.
- Inventors: Michel Lucien Guillon; Cecile Adrienne Maissa
- Web page: https://patentgrep.com/patent/US20140152953A1

## CPC

- G02C 7/083: {Electrooptic lenses}
- A61F 2/145: {Corneal inlays, onlays, or lenses for refractive correction}
- A61F 2/16: Intraocular lenses
- A61F 2/1627: {for changing index of refraction, e.g. by external means or by tilting}
- A61F 2/1635: {for changing shape}
- G02B 1/043: {Contact lenses}
- G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00)
- G02C 7/049: {Contact lenses having special fitting or structural features achieved by special materials or material structures}
- G02C 7/081: {Ophthalmic lenses with variable focal length}
- G02C 7/085: {Fluid-filled lenses, e.g. electro-wetting lenses}
- G02C 11/10: {Electronic devices other than hearing aids}
- A61F 2250/0002: for data transfer
- B82Y 20/00: Nanooptics, e.g. quantum optics or photonic crystals
- Y10S 977/932: for electronic or optoelectronic application
- 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)
- 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)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

The present invention provides a contact lens manufactured at least partially from an intelligent polymer, the lens having a relaxed state which, upon application of a first stimulus forms a first corrective shape and which, upon application of a second stimulus, forms a second corrective shape, wherein the corrective effect provided by the lens in the relaxed state is intermediate to the corrective visual effects provided by the first and second corrective shapes.

## Claims

### Claim 1

A contact lens manufactured at least partially from an intelligent polymer, the contact lens having a relaxed state which, upon application of a first stimulus forms a first corrective shape and which, upon application of a second stimulus, forms a second corrective shape, wherein the corrective effect provided by the contact lens in the relaxed state is intermediate to corrective visual effects provided by the first and second corrective shapes.

### Claim 2 (depends on 1)

The contact lens of claim 1 wherein the corrective visual effect provided by the first corrective shape is a near addition correction.

### Claim 3 (depends on 1)

The contact lens of claim 1 wherein the corrective visual effect provided by the second corrective shape is a distance correction.

### Claim 4 (depends on 1)

The contact lens of claim 1, wherein the first and second corrective shapes differ in terms of the degree of curvature of the contact lens.

### Claim 5 (depends on 1)

The contact lens of claim 1, wherein the change in lens shape upon the application of the first and/or second stimulus is localised to the front surface and/or back surface and/or an embedded zone within the contact lens.

### Claim 6 (depends on 5)

The contact lens of claim 5, wherein the embedded zone is located within a gas filled cavity within the contact lens.

### Claim 7 (depends on 5)

The contact lens of claim 5, wherein the embedded zone comprises a gas-filled cavity which is either partially or totally surrounded by the intelligent polymer.

### Claim 8

(canceled)

### Claim 9 (depends on 1)

The contact lens of claim 1, wherein the back and/or the front surfaces of the contact lens are toric and/or aspheric.

### Claim 10 (depends on 1)

The contact lens of claim 1, wherein the contact lens is an intraocular lens.

### Claim 11 (depends on 1)

The contact lens of claim 1, wherein the contact lens is a corneal inlay or onlay lens.

### Claim 12

(canceled)

### Claim 13 (depends on 1)

The contact lens of claim 1, wherein the first stimulus has a positive polarity and the second stimulus has a negative polarity.

### Claim 14

(canceled)

### Claim 15 (depends on 1)

The contact lens of claim 1, wherein the first and second stimuli are electric fields.

### Claim 16

(canceled)

### Claim 17

(canceled)

### Claim 18 (depends on 1)

The contact lens of claim 1, wherein the first or second stimulus is produced by a stimulus emission emitter.

### Claim 19 (depends on 18)

The contact lens of claim 18, wherein the stimulus emission emitter comprises a chip embedded within the contact lens.

### Claim 20 (depends on 18)

The contact lens of claim 18, wherein the stimulus emission emitter comprises a nano or micro chip, an environmental energy harvesting cell, or a body energy harvesting cell, or any combination thereof.

### Claim 21

(canceled)

### Claim 22 (depends on 1)

The contact lens of claim 1, further comprising a chip for monitoring eye movement.

### Claim 23 (depends on 22)

The contact lens of claim 22, wherein the chip is embedded in the contact lens.

### Claim 24 (depends on 22)

The contact lens of claim 22, wherein the chip is a nano or micro chip.

### Claim 25

(canceled)

### Claim 26 (depends on 22)

The contact lens of claim 22, wherein the chip monitors the eye movement such that a change in the eye movement causes the chip to emit the first or second stimulus or to alter the magnitude of the first or second stimulus, if already emitted.

### Claim 27 (depends on 22)

The contact lens of claim 22, wherein the chip monitors the lines of sight such that a change in an angle of convergence causes the chip to emit the first or second stimulus or to alter the magnitude of the first or second stimulus, if already emitted.

### Claim 28 (depends on 22)

The contact lens of claim 22, wherein the chip tracks rotation of the contact lenses such that a change in the rotation causes the chip to emit the first or second stimulus or to alter the magnitude of the first or second stimulus, if already emitted.

### Claim 29 (depends on 22)

The contact lens of claim 22, wherein the chip monitors an inter-pupillary distance from the centre of a user's pupils and emits the first or second stimulus when the inter-pupillary distance changes.

### Claim 30 (depends on 24)

The contact lens of claim 24, wherein the chip monitors a distance between the right and left contact lenses and emits the first or second stimulus when the distance changes.

### Claim 31 (depends on 24)

The contact lens of claim 24, wherein the chip is capable of emitting the first and/or second stimuli at a range of magnitudes.

### Claim 32

(canceled)

### Claim 33 (depends on 1)

The contact lens of claim 1, wherein the contact lens comprises a single region of the intelligent polymer.

### Claim 34 (depends on 1)

The contact lens of claim 1, wherein the contact lens comprises a plurality of regions of the intelligent polymer.

### Claim 35 (depends on 34)

The contact lens of claim 34, wherein each of the plurality of regions of the intelligent polymer produces the same type of effect upon the emission of the first and second stimuli.

### Claim 36 (depends on 1)

The contact lens of claim 1, wherein the contact lens is formed substantially completely of the intelligent polymer.

### Claim 37 (depends on 1)

The contact lens of claim 1, wherein the contact lens comprises hydrogels, silicone hydrogels, silicone polymers, poly(urethanes), poly(siloxanes), silicones, poly(methyl methacrylate), poly(vinyl alcohol), poly(ethylenes), poly(vinyl pyrrolidone), poly(methacrylic acid), poly(acrylamide), poly(ethylene oxide), poly(acrylic) acid, poly(propylene oxide), poly(2-hydroxy ethyl methacrylate), or mixtures thereof.

### Claim 38 (depends on 1)

The contact lens of claim 1, wherein the intelligent polymer comprises electronic electrically activated polymer/s and/or ionic electrically activated polymer/s.

### Claim 39 (depends on 38)

The contact lens of claim 38 wherein the electronic electrically activated polymer/s comprises dielectric EAPs, electrostrictive elastomers, electro-viscoelastic elastomers, piezoelectric polymers, ferroelectric polymers, poly[(vinylidenefluoride-co-trifluoroethylene] [P(VDF-TrFE)]), carbon nanotube aerogel, or mixtures thereof.

### Claim 40 (depends on 38)

The contact lens of claim 38 where the ionic electrically activated polymer/s comprises polymer gels, polyelectrolyte materials, ionic polymers (optionally including metal composites), ion-exchange polymer metal matrix composites (IPMC), electro conducting conjugated polymer, carbon nanotubes, or mixtures thereof.

### Claim 41 (depends on 1)

The contact lens of claim 1, wherein the intelligent polymer comprises chitosan, chondroitin sulfate, hyaluronic acid, alginate, vinyl alcohol, allylamine, acrylonitrile, 2-acrylamido-2-methypropane sulfonic acid, aniline, 2-hydroxyethyl methacrylate, methacrylic acid, acrylic acid, vinyl sulfonic acid, poly(2-hydroxyethyl methacrylate), chitosan, poly(vinyl alcohol), poly(sodium maleate-co-sodium acrylate), alginate/poly(diallyldimethylamomium chloride), acrylic acid/vinyl sulfonic acid hydrogel, hydrogel based on polyacrylic acid/polyvinyl sulfonic acid, poly(acrylic acid)-co-(acrylamide) gels, acrylic acid acrylamide copolymere gels PAAm, poly(vinyl alcohol)-poly(acrylic acid) gels, poly(vinyl alcohol)-poly(sodium acrylate), polyacrylic acid with sodium acrylate crosslinked with bisacrylamide, polyacrylonitrile, polysodium acrylate (PAANa), Gelatin/poly(hydroxyethylmethacrylate) hydrogel, polyelectrolyte gels as vinyl polymer, poly(dimethyl siloxane) with TiO2 particles, or mixtures thereof.

### Claim 42 (depends on 1)

The contact lens of claim 1, wherein the intelligent polymer comprises magnetite, ferrogels, metallic particles, plating, metal composite particles, plating, semiconducting polymer particles, polyN-isopro-pylacrylamide poly(hydroxyethyl methacrylate), styrene-ethylene/butylene-styrene triblock polymer gels, ethylene vinyl alcohol, other polyelectrolytes or additives, or mixtures thereof.

### Claim 43

(canceled)

### Claim 44 (depends on 1)

The contact lens of claim 1, further comprising a power source.

### Claim 45 (depends on 44)

The contact lens of claim 44, wherein the power source is embedded within the contact lens.

### Claim 46

(canceled)

### Claim 47 (depends on 1)

A pair of contact lenses, wherein one or both of the contact lenses is the contact lens of claim 1.

### Claim at position 48

-50. (canceled)

### Claim 51 (depends on 44)

The contact lens of claim 44, wherein the power source comprises an environmental energy harvesting cell, a body energy harvesting cell, a chemical cell, a pre-charged cell, or any combination thereof.