US20130238090A1 - Processor controlled intraocular lens system - Google Patents

Processor controlled intraocular lens system Download PDF

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Publication number
US20130238090A1
US20130238090A1 US13/599,738 US201213599738A US2013238090A1 US 20130238090 A1 US20130238090 A1 US 20130238090A1 US 201213599738 A US201213599738 A US 201213599738A US 2013238090 A1 US2013238090 A1 US 2013238090A1
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Prior art keywords
intraocular lens
lens system
lens
curve lens
intraocular
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Abandoned
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US13/599,738
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English (en)
Inventor
Randall B. Pugh
Daniel B. Otts
Frederick A. Flitsch
Janet Plapp
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Individual
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Priority to US13/599,738 priority Critical patent/US20130238090A1/en
Priority to TW101131890A priority patent/TWI577360B/zh
Publication of US20130238090A1 publication Critical patent/US20130238090A1/en
Priority to US14/504,408 priority patent/US10052196B2/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses 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
    • A61F2/1624—Intraocular lenses 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 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
    • A61F2/1635—Intraocular lenses 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 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside for changing shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses 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
    • A61F2/1624—Intraocular lenses 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 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1613—Intraocular lenses 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
    • A61F2/1624—Intraocular lenses 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 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside
    • A61F2/1627—Intraocular lenses 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 having adjustable focus; power activated variable focus means, e.g. mechanically or electrically by the ciliary muscle or from the outside for changing index of refraction, e.g. by external means or by tilting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
    • G02B26/005—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid based on electrowetting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
    • G02C7/081—Ophthalmic lenses with variable focal length
    • G02C7/085—Fluid-filled lenses, e.g. electro-wetting lenses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/48—Operating or control means, e.g. from outside the body, control of sphincters
    • A61F2/482—Electrical means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/005—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0043—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in electric properties, e.g. in electrical conductivity, in galvanic properties

Definitions

  • the present invention relates generally to an intraocular lens controlled with a processor.
  • Some specific embodiments include an intraocular lens with a liquid meniscus.
  • IOLs intraocular lenses
  • Multifocal IOLs which provide a patient with correction for both distance and near vision.
  • Multifocal IOLs employ the same technology as multifocal contact lenses, but implemented within an intraocular lens.
  • IOLs currently claim adaptive capabilities, providing the patient with limited visual accommodation. Accommodating IOLs are designed to allow the eye to shift focus onto near objects. Current versions of accommodating IOLs rely on physical changes within the eye to effect a change in the shape of an intraocular lens, resulting in a change in the lens' optical power. In many implementations, the optical properties of accommodating IOLs cannot be changed after implantation, although such changes may be desirable for a variety of reasons. In many cases, a patient's vision prescription changes as a result of the eye surgery necessary to implant the IOL. The closure and healing of the incision may induce astigmatism as portions of the eye are drawn together to close the incision.
  • Electronic components may be incorporated into an intraocular lens.
  • Electronic components may enable an intraocular lens including a liquid meniscus lens which provides variable focus that can be controlled and adjusted in a variety of ways.
  • the present invention provides an intraocular lens system controlled with a processor, including a liquid meniscus lens and supporting electronics.
  • an intraocular lens system includes an optical zone in which is found a liquid meniscus lens, and an electrical zone with components such as power sources, processors, memory, sensors, and communication elements.
  • Power sources within an intraocular lens system may be recharged or receive continuous charge using a variety of methods.
  • the liquid meniscus lens, supported by power sources, sensors and logic within the intraocular lens system provides automated or manual focus capabilities, providing focus for near vision, far vision, and points in between.
  • various capabilities of an intraocular lens system may be remotely adjusted, such as to correct for surgery-induced astigmatism, to adjust sensitivity of lens functions to changes in sensor data, and to alter the range of diopter correction between far and near vision.
  • FIG. 1A illustrates a prior art example of a cylindrical liquid meniscus lens in a first state.
  • FIG. 1B illustrates the prior art example of a cylindrical liquid meniscus lens in a second state.
  • FIG. 2 illustrates a profile sliced cut away of an exemplary arcuate liquid meniscus lens according to some embodiments of the present invention.
  • FIG. 3 illustrates a front view block diagram of an exemplary intraocular lens system in the form of a rounded rectangle according to some embodiments of the present invention.
  • FIG. 4 illustrates a front view block diagram of an exemplary intraocular lens system in the form of an ellipse according to some embodiments of the present invention.
  • FIG. 5 illustrates a front view block diagram of an exemplary intraocular lens system in the form of a circle according to some embodiments of the present invention.
  • FIGS. 6A , 6 B and 6 C illustrate various cross-sectional side views of an exemplary intraocular lens system according to some embodiments of the present invention.
  • the present invention includes methods and apparatus for forming an intraocular lens system controlled by a processor.
  • the present invention includes methods and apparatus for providing an intraocular lens system controlled by a processor, including a liquid meniscus lens and supporting electronics.
  • the present invention includes a liquid meniscus lens in an optic zone with supporting electronics located in an electrical zone around the periphery.
  • Accommodation refers to the process by which the eye changes optical power to maintain a clear image (focus) on an object as its distance changes.
  • Astigmatism refers to faulty vision resulting from defective curvature of the cornea or lens of the eye.
  • Capsular Bag refers to a sack-like structure remaining within the eye following removal of the natural lens. An implanted intraocular lens is placed within this structure to recreate the usual phakic (presence of the natural crystalline lens) state.
  • Ciliary Muscle refers to a ring of striated smooth muscle in the eye's middle layer (vascular layer) that controls accommodation for viewing objects at varying distances.
  • Diopter refers to a unit of measure of the optical or refractive power of a lens.
  • Electrical Zone refers to an area around the periphery of an optical zone in which electronic elements are found.
  • Intraocular Lens System refers to an intraocular lens including supporting electronics and a liquid meniscus lens.
  • Intraocular Lens refers to an implanted lens in the eye, usually replacing the existing crystalline lens because it has been clouded over by a cataract, or as a form of refractive surgery to change the eye's optical power.
  • Liquid Meniscus Lens refers to a lens containing one or more fluids to create an infinitely-variable lens without any moving parts by controlling the meniscus (the surface of the liquid.)
  • Microprocessor refers to a circuit or series of circuits capable of receiving digital data and performing a calculation based upon the data received.
  • Monofocal Lens refers to a lens with a fixed focus for one distance.
  • Multifocal Lens refers to a lens that has rings of focus power variations. Some rings provide focus for near objects, some for mid-range objects, and some rings provide the focus power for distant objects.
  • Optical Zone refers to an area of an ophthalmic lens through which a wearer of the ophthalmic lens sees.
  • An ophthalmic lens may include a contact lens or an intraocular lens.
  • FIG. 1A a cut away view of a prior art liquid meniscus lens 100 is illustrated with an oil 101 and a saline solution 102 contained within cylinder 110 .
  • the cylinder 110 includes two plates of optical material 106 . Each plate 106 includes a flat interior surface 113 - 114 .
  • the cylinder 110 includes an interior surface that is essentially rotationally symmetric. In some prior art embodiments, one or more surfaces may include a hydrophobic coating 103 .
  • Electrodes 105 are also included on or about the perimeter of the cylinder.
  • An electrical insulator 104 may also be used proximate to the electrodes 105 .
  • each of the interior surfaces 113 - 114 is essentially flat or planar.
  • An interface surface 112 A is defined between the saline solution 102 and the oil 101 .
  • the shape of the interface 112 A is combined with the refractive index properties of the saline solution 102 and the oil 101 to receive incident light 108 through a first interior surface 113 and provide divergent light 109 through a second interior surface 114 .
  • the shape of the interface surface between the oil 101 and the saline solution 102 may be altered with the application of an electrical current to the electrodes 105 .
  • FIG. 100A illustrates a perspective view of the prior art liquid meniscus lens illustrated at 100 .
  • the prior art liquid meniscus lens 100 is illustrated in an energized state.
  • the energized state is accomplished by applying voltage 114 across the electrodes 105 .
  • the shape of the interface surface 112 B between the oil 101 and the saline solution 102 B is altered with the application of an electrical current to the electrodes 105 .
  • incident light 108 B passing through the oil 101 and the saline solution 102 B is focused into a convergent light pattern 111 .
  • FIG. 2 a cut away view of a liquid meniscus lens 200 with a front curve lens 201 and a back curve lens 202 .
  • the front curve lens 201 and the back curve lens 202 are positioned proximate to each other and form a cavity 210 therebetween.
  • the front curve lens 201 includes a concave arcuate interior lens surface 203 and a convex arcuate exterior lens surface 204 .
  • the concave arcuate lens surface 203 may have one or more coatings (not illustrated in FIG. 2 ). Coatings may include, for example, one or more of electrically conductive materials or electrically insulating materials, hydrophobic materials or hydrophilic materials.
  • One or both of the concave arcuate lens surface 203 and the coatings are in liquid and optical communication with an oil 208 contained within the cavity 210 .
  • the back curve lens 202 includes a convex arcuate interior lens surface 205 and a concave arcuate exterior lens surface 206 .
  • the convex arcuate lens surface 205 may have one or more coatings (not illustrated in FIG. 2 ). Coatings may include, for example, one or more of electrically conductive materials or electrically insulating materials, hydrophobic materials or hydrophilic materials. At least one of the convex arcuate lens surface 205 and the coatings are in liquid and optical communication with a saline solution 207 contained within the cavity 210 .
  • the saline solution 207 includes one or more salts or other components which are electrically conductive and as such may be either attracted to or repulsed by an electric charge.
  • an electrically conductive coating 209 is located along at least a portion of a periphery of one or both of the front curve lens 201 and the back curve lens 202 .
  • the electrically conductive coating 209 may include gold or silver and is preferably biocompatible.
  • Application of an electrical charge to the electrically conductive coating 209 creates either an attraction or a repulsion of the electrically conductive salts or other components in the saline solution 207 .
  • the front curve lens 201 has an optical power in relation to light passing through the concave arcuate interior lens surface 203 and a convex arcuate exterior lens surface 204 .
  • the optical power may be 0 or may be a plus or minus power.
  • the optical power is a power typically found in corrective contact lenses or an artificial intraocular lens, such as, by way of non-limiting example, a power between ⁇ 8.0 and +8.0 diopters.
  • the back curve lens 202 has an optical power in relation to light passing through the convex arcuate interior lens surface 205 and a concave arcuate exterior lens surface 206 .
  • the optical power may be 0 or may be a plus or minus power.
  • the optical power is a power typically found in corrective contact lenses or an artificial intraocular lens, such as, by way of non-limiting example, a power between ⁇ 8.0 and +8.0 diopters.
  • a cross cut lens thickness 213 of an arcuate liquid meniscus lens 200 will be up to about 1,000 microns thick.
  • An exemplary lens thickness 213 of a relatively thinner lens 200 may be up to about 200 microns thick.
  • Preferred embodiments may include a liquid meniscus lens 200 with a lens thickness 213 of about 600 microns thick.
  • a cross cut thickness of front curve lens 201 may be between about 35 microns to about 200 microns and a cross cut thickness of a back curve lens 202 may also be between about 35 microns and 200 microns.
  • an aggregate optical power is an aggregate of optical powers of the front curve lens 201 , the back curve lens 202 and a liquid meniscus 211 formed between the oil 208 and the saline solution 207 .
  • an optical power of the lens 200 will also include a difference in refractive index as between one or more of the front curve lens 201 , the back curve lens 202 , oil 208 and the saline solution 207 .
  • an arcuate liquid meniscus lens 200 incorporated into an ophthalmic lens such as an intraocular lens and a contact lens
  • an oil 208 and saline solution 207 combination is preferably selected with a same or similar density.
  • an oil 208 and a saline solution 207 preferably have relatively low immiscibility so that the saline solution 207 and oil 208 will not mix.
  • a volume of saline solution 207 contained within the cavity 210 is greater than the volume of oil 208 contained within the cavity 210 .
  • some preferred embodiments include the saline solution 207 in contact with essentially an entirety of an interior surface 205 of the back curve lens 202 .
  • Some embodiments may include a volume of oil 208 that is about 66% or more by volume as compared to an amount of saline solution 207 .
  • Some additional embodiments may include an arcuate liquid meniscus lens 200 wherein a volume of oil 208 is about 90% or less by volume as compared to an amount of saline solution 207 .
  • sleep charging include a charging device contained in a pillowcase, a pillow, a blanket, or other article on which or near which a user sleeps. Additionally, far field charging may be accomplished by placing a charging device, such as radio frequency emitter, on a user's nightstand or headboard.
  • a charging device such as radio frequency emitter
  • Charging of power sources may be via one or a combination of the various methods which have been described.
  • One example of combined charging methods includes radio frequency charging during sleep cycles coupled with photo sensor trickle charging during wake cycles.
  • Power sources supply electrical current to a liquid meniscus lens contained within an optical zone 301 of an intraocular lens system, wherein a change in the shape of the liquid meniscus results in a change in optical power, as described in FIG. 2 .
  • the liquid meniscus lens acts as a capacitor, holding a charge and maintaining an activated position of the liquid meniscus, such as increased optical power for near vision, without the continuous application of power.
  • power is discharged from the liquid meniscus lens and the liquid meniscus assumes its relaxed position, providing the appropriate default optical power for distance vision.
  • Power sources are under control of a microprocessor located within an electrical zone 302 .
  • the microprocessor executes one or more programs that analyze data and apply power accordingly to control operation of the intraocular lens system with liquid meniscus lens.
  • data analyzed by the microprocessor is in the form of sensed data, such as, for example, sensing contraction within the capsular bag, sensing a potential voltage change across a ciliary muscle, and sensing patterns of eyelid closing or squinting which signify an intent to switch between near and distance vision.
  • Contraction of the capsular bag may be sensed, for example, via a pressure transducer. The transducer will translate a pressure change into one or both of an analog voltage or a digital voltage state.
  • An intraocular lens system with liquid meniscus lens may be modified in two different ways: focus and adjustment. Its primary purpose is to change focus, accommodating distance vision, near vision, and intermediate vision.
  • changes in focus are automated, such as, for example, when a pressure transducer senses contraction of the capsular bag, and a processor in the intraocular lens system translates the magnitude of capsular bag pressure into a corresponding optical power change within the liquid meniscus lens.
  • changes in focus may be controlled manually, such as, for example, when a wearer presses a button on a fob, transmitting a command to a processor in an intraocular lens system which in turn initiates an optical power change within a liquid meniscus lens.
  • Adjustment refers to one-time or ad-hoc modification of an intraocular lens system. Adjustment may, for example, set or modify the diopter change between far and near vision, may program operation of a liquid meniscus lens to correct for a specific degree and magnitude of astigmatism, and may change the sensitivity of the intraocular lens system to changes in a ciliary muscle or capsular bag. Adjustment may be accomplished by an eye care professional before an intraocular lens system is surgically implanted or after implantation. In some embodiments, post-surgical adjustment may be via a device which allows the input or setting of parameters and the transmission of parameters to the intraocular lens. In some embodiments, the patient may participate in or control post-surgical adjustment in order to fine-tune vision settings.
  • default optical characteristics will provide optical correction for a “distant” vision correction and post surgical adjustment will modify one or more optical characteristics of “near” vision.
  • an exemplary intraocular lens system is depicted in a front view block diagram.
  • This embodiment features an intraocular lens system 400 in elliptical form, including a circular visual zone 401 surrounded by an electrical zone 402 .
  • Other embodiments may include an optical zone 401 of elliptical, rectangular, or other shape conducive to vision correction.
  • the visual zone 401 consists of a liquid meniscus lens.
  • a liquid meniscus lens may be in a traditional “hockey puck” form, as shown in FIGS. 1A and 1B , or in an arcuate form, as shown in FIG. 2 .
  • the intraocular lens system of FIG. 4 includes the same features and capabilities as the intraocular lens system described in FIG. 3 , such as, for example, ability to change focus, adjustability of settings, electrical zone elements, power management subsystem, charging options, folding capability and encapsulation.
  • an intraocular lens system 500 is depicted in a front view block diagram.
  • the intraocular lens system 500 is in the form of a circle with a circular visual zone 501 surrounded by an electrical zone 502 .
  • Other embodiments may include an optical zone 501 of elliptical, rectangular, or other shape conducive to vision correction.
  • the visual zone 501 consists of a liquid meniscus lens.
  • a liquid meniscus lens may be in a traditional “hockey puck” form, as shown in FIGS. 1A and 1B , or in an arcuate form, as shown in FIG. 2 .
  • the intraocular lens system of FIG. 5 includes the same features and capabilities as the intraocular lens system described in FIG. 3 , such as, for example, ability to change focus, adjustability of settings, electrical zone elements, power management subsystem, charging options, folding capability and encapsulation.
  • FIG. 6 three cross sectional side views of non-limiting exemplary intraocular lens systems are depicted.
  • FIG. 6A shows an embodiment in which an intraocular lens system is flat.
  • An arcuate version of an intraocular lens system is depicted in FIG. 6B .
  • An arcuate intraocular lens system may be placed convex toward the exterior of the eye, or convex toward the interior of the eye.
  • FIG. 6C depicts a biconvex intraocular lens system.
  • FIGS. 6A , 6 B and 6 C are intended to depict possible embodiments, but do not limit the scope of the invention as other variations in shape are possible.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Cardiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
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AU2012301868A1 (en) 2014-03-13
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US10052196B2 (en) 2018-08-21
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ES2626299T3 (es) 2017-07-24
TWI577360B (zh) 2017-04-11
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RU2594435C2 (ru) 2016-08-20
SG2014012223A (en) 2014-06-27

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