Patent classifications
A61F9/00831
Apparatus for patterned plasma-mediated laser ophthalmic surgery
A system for ophthalmic surgery on an eye includes: a pulsed laser which produces a treatment beam; an OCT imaging assembly capable of creating a continuous depth profile of the eye; an optical scanning system configured to position a focal zone of the treatment beam to a targeted location in three dimensions in one or more floaters in the posterior pole. The system also includes one or more controllers programmed to automatically scan tissues of the patient's eye with the imaging assembly; identify one or more boundaries of the one or more floaters based at least in part on the image data; iii. identify one or more treatment regions based upon the boundaries; and operate the optical scanning system with the pulsed laser to produce a treatment beam directed in a pattern based on the one or more treatment regions.
System and method for laser corneal incisions for keratoplasty procedures
A first image of the eye is generated when the cornea of the eye is exposed to a gas. The cornea is covered with an optic of a patient interface. A second image of the eye with the patient interface over the cornea is generated. In this second image, the patient interface distorts the second image of the eye. One or more of a position or an orientation of the eye is determined in response to the first image and the second image when the patient interface has been placed over the cornea.
Corneal Treatment
Systems and methods produce implants for treating keratoconus or other eye disorders. An example method includes identifying a subject with keratoconus. The method includes obtaining, with assessment means, an assessment of a cornea of a subject; determining, by processor(s), inverse measurements for correcting one or more irregularities associated with the keratoconus based on the assessment; and shaping, with a laser system, a donor cornea according to a pattern based on the inverse measurements. The example method may further include determining smoothing effects associated with the cornea, wherein the inverse measurements are based further on the smoothing effects, and the pattern for shaping the donor cornea is based further on the smoothing effects. Obtaining the assessment of the cornea may include obtaining a topographic measurement, a tomographic measurement, anterior segment optical coherence tomography (OCT), Scheimpflug imaging, an epithelium mapping, a stromal thickness mapping, and/or one or more biomechanical measurements.
DEVICES AND METHODS FOR LASER SURGERY OF AN EYE, ESPECIALLY FOR KERATOPLASTY
Devices and methods of laser surgery of an eye, especially for refractive surgery, preferably for keratoplasty. The invention includes a planning and control unit, a system for laser surgery of an eye and a planning and control method wherein a device coordinate system of the first laser device and a device coordinate system of the characterization device are coupled using registration and measurement data or model data of the lamella can be unambiguously registered to the device coordinate systems, further by a defined edge geometry of the lamella, an ametropia correction during the generation of the lamella and by taking into account the hydration condition of the lamella, as well as methods for surgery.
CORNEAL IMPLANT SYSTEMS AND METHODS
A storage/delivery device includes a first wall defining a well configured to receive a corneal tissue. The storage/delivery device includes a second wall configured to be positioned over the first wall and to seal the well. The second wall includes a recess configured to extend into the well to define a chamber between the first wall and the second wall. The chamber is configured to hold the corneal tissue when the second wall seals the well. A system may include the storage/delivery device above and a measurement system configured to measure the corneal tissue disposed in the well. In one example embodiment, the measurement system is an optical coherence tomography (OCT) system. In another example embodiment, the measurement system is a second-harmonic generation (SHG) or third-harmonic generation (THG) microscopy system.
Corneal Implant Systems and Methods
An example method for cutting a plurality of lenticules from a donor cornea includes receiving a donor cornea, cutting a first layer of a first set of lenticules from the donor cornea, and cutting a second layer of a second set of lenticules from the donor cornea. The lenticules are cut according to a pattern that to maximizes the number of lenticules, thereby maximizing the number of implants from the single donor cornea.
An example implant handling device includes a body. The body includes a flattened end configured to receive a corneal implant and keep the corneal implant from rolling or folding. The flattened end has a width and a height, the width being greater than the height. The body includes a slit opening to the flattened end, the slit opening configured to allow the corneal implant to pass into the flattened end.
SYSTEM AND METHOD FOR LASER CORNEAL INCISIONS FOR KERATOPLASTY PROCEDURES
A first image of the eye is generated when the cornea of the eye is exposed to a gas. The cornea is covered with an optic of a patient interface. A second image of the eye with the patient interface over the cornea is generated. In this second image, the patient interface distorts the second image of the eye. One or more of a position or an orientation of the eye is determined in response to the first image and the second image when the patient interface has been placed over the cornea.
METHOD FOR PRODUCING A PLURALITY OF IMPLANTS FROM A PREVIOUSLY REMOVED HUMAN OR ANIMAL CORNEA
The invention concerns a cutting process for producing a plurality of implants from a previously removed human or animal cornea, wherein the process comprises the following steps: depositing (200) the cornea in a holding device, cutting (300), using a laser source, the cornea contained in the holding device to obtain a cut cornea, detaching (400) each implant from the cut cornea, decellularizing (500) each detached implant to obtain decellularized implants, lyophilizing (600) each decellularized implant to obtain lyophilized implants, sterilizing (700) each lyophilized implant to obtain sterilized implants, packaging (800) each sterilized implant to obtain packaged implants.
METHODS AND DEVICES FOR WAVEFRONT TREATMENTS OF ASTIGMATISM, COMA, PRESBYOPIA IN HUMAN EYES
Methods and devices are provided for wavefront treatments of an eye's astigmatism, coma, and presbyopia. Wavefront-engineered monofocal lenses, inducing spherical aberration into the eye's central pupil, provide vision correction beyond 20/20 acuity and improve quality of vision by eliminating image distortion caused by uncorrected astigmatism and coma in the eye. New presbyopia-correcting lenses, including Extended Depth of Focus (EDOF) bifocal, EDOF trifocal, and quasi-accommodating lenses, are disclosed for presbyopia corrections between +0.75 D to +3.25 D, and they are achieved by inducing a positive spherical aberration and a positive focus offset less than 3 Diopters in a central section plus a negative spherical aberration in an annular section within a central part of a monofocal lens. These wavefront lenses can be adapted for contact lenses, implantable contact lenses, Intraocular Lenses (IOLs), phakic IOLs, accommodating IOLs, corneal inlays, as well as eyepieces for Virtual Reality (VR) displays, game goggles, microscopes, telescopes.
POSTERIOR CORNEAL SURFACE MAPPING AND DEEP LAMELLAR CORNEAL INCISION PARALLEL TO POSTERIOR CORNEAL SURFACE
A method for forming deep corneal lamellar incision parallel to the posterior corneal surface when the eye is docked to the patient interface. A lower-energy detecting beam generated by the same pulsed laser that generates the higher-energy treatment laser beam is utilized to measure the posterior corneal surface profile. The detecting beam is scanned in the eye according to a first 3-dimensional scan pattern, while intensity of the back-reflected light is measured by a light intensity detector. The first scan pattern may be a spiral pattern in the X-Y plane coupled with a Z direction oscillation function. Peaks of the light intensity signal are detected, and corresponding spatial positions of the focus point are obtained; a known offset distance is added to the depth value to obtain the posterior corneal surface profile. Based thereon, the treatment laser beam is scanned in the eye to form the deep corneal lamellar incision.