692results about "Laser surgery" patented technology

Devices and methods are disclosed for improved followability in laser-based ocular procedures. In some embodiments, an ophthalmic instrument comprises a projection located at the distal end of the shaft or cannula, the projection having a distal surface in proximity to the distal end of the optical fiber, the distal surface adapted to be positioned facing the treatment area during use of the ophthalmic instrument. An example method includes delivering laser energy through an optical fiber to the treatment area, wherein the distal surface of the projection inhibits bubbles formed during the procedure from moving distally away from the distal end of the ophthalmic instrument.

Systems and methods for compensating for tilt of an intraocular lens (IOL) and systems and methods for adjusting an IOL are disclosed herein. For example, one of the methods may include capturing one or more optical coherence tomography (OCT) images of a subject's eye while implanting the IOL within the subject's eye. The method may further include generating a fixation target such that the fixation target is visible to an eye of the subject; and moving the fixation target until the lateral plane of the IOL is perpendicular or substantially perpendicular to the optical axis of the ophthalmic system. The method may also include directing a laser beam generated by a laser of the ophthalmic system at the IOL.

In certain embodiments, an ophthalmic system is provided. The ophthalmic system includes a low power laser source configured to generate a low power laser beam, wherein the low power laser source has a power of between 5 milliwatts (mW) and 20 mW, and a first illumination device configured to transmit the low power laser beam into a vitreous cavity of an eye. The ophthalmic system further includes a red-green-blue (RGB) light-emitting diode (LED) light source configured to generate a RGB light, and a second illumination device configured to transmit the RGB light into the vitreous cavity of the eye.

Transcorneal and fiberoptic laser delivery systems and methods for the treatment of eye diseases wherein energy is delivered by wavelengths transparent to the cornea to effect target tissues in the eye for the control of intraocular pressure in diseases such as glaucoma by delivery systems both external to and within ocular tissues. External delivery may be affected under gonioscopic control. Internal delivery may be controlled endoscopically or fiberoptically, both systems utilizing femtosecond laser energy to excise ocular tissue. The femtosecond light energy is delivered to the target tissues to be treated to effect precisely controlled photodisruption to enable portals for the outflow of aqueous fluid in the case of glaucoma in a manner which minimizes target tissue healing responses, inflammation and scarring.

A glaucoma treatment apparatus including an imaging device capable of imaging the anterior segment of the eye, a treatment laser, an algorithm programmed to determine a location and a cross sectional area of a treatment based on a customized anatomy of the anterior segment of the eye including the trabecular meshwork (TM), the Schlemm's Canal (SC) and collector channels (CCS), obtained from pre-operative images of the anterior segment of the eye, a pre-operative intraocular pressure (IOP) level and a target IOP reduction as an inputs, and a processor configured to actuate the apparatus to create an outflow channel with a cross-sectional area and location or multiple outflow channels with multiple cross-sectional areas and locations from the anterior chamber (AC) to the SC across the TM, as determined by the algorithm to achieve the target intraocular pressure (IOP) reduction. Also disclosed is a method of reducing intraocular pressure in an eye.

A light based system for treating an eye includes a mask that is configured for positioning on the eye and a light source that is configured to deliver therapeutic light. The mask has an inner surface that is positionable against the eye and an outer surface that is opposite the inner surface. The mask is optically opaque to prevent transmission of light through the mask and the mask includes at least one transparent opening that allows transmission of light through the mask to target tissue of the eye posterior the transparent opening. The light source is positioned relative to the mask so that the delivered therapeutic light irradiates at least a portion of the mask and the transparent opening. Therapeutic light traverses through the transparent opening to the target tissue positioned posterior the transparent opening.

The present disclosure generally relates to a surgical instrument. The surgical instrument includes a base unit and a probe. The probe is disposed through an opening in a distal end of the base unit. The probe includes a port formed proximate to a distal tip of the probe. The distal tip includes a window, a lumen formed through the probe, and one or more optical fibers disposed in the lumen. The one or more optical fibers project a first laser light for irradiating an area proximate to the port to cut collagen fibers of vitreous material aspirated through the port. The one or more optical fibers further project a second laser light for cauterizing bleeding in an intraocular space of a patient.

The invention belongs to the technical field of eye protection medical instruments, and discloses an instantaneous eye protection and optical barrier device during laser therapy, which comprises a bed frame and a laser therapeutic instrument host, an electric telescopic rod drives an L-shaped plate to move, the L-shaped plate drives a connecting plate and a positioning plate in a protection assembly to move, and the laser therapeutic instrument host is connected with the bed frame. When an L-shaped plate moves, the L-shaped plate drives a square box and a square ring sliding frame to move, the square ring sliding frame drives a square plate and magnetic blocks to move, the two magnetic blocks are close to each other, and due to the action of magnetic fields generated by the L-shaped plate and the square ring sliding frame, although the distance is gradually reduced, due to the action of the same polarity, the eyes of the patient can be preliminarily shielded. And the two magnetic blocks always keep a certain distance, so that direct contact is avoided. And because the laser operation is an instantaneous process, the electric telescopic rod drives the protection assemblies to operate quickly, the two protection assemblies which are close to each other can be prevented from colliding through the two magnetic blocks, and the phenomenon that the device is damaged is avoided.

The present invention relates to a method for diagnosing and / or prognosticating a disease associated with a changed structure in the posterior eye, the method comprising analyzing an image of the posterior eye obtained by a trans-scleral optical imaging (TOI) device for a structure changed with respect to a reference, wherein the changed structure indicates the presence and / or progression of a disease in a subject.

In certain embodiments, an ophthalmic laser surgical system for treating a floater in an eye includes a scanning laser ophthalmoscopy (SLO) device, a treatment laser device, and an xy-scanner. The SLO device directs an SLO beam towards the retina of the eye, generates an image that includes the floater shadow from the SLO beam reflected from the eye, determines the xy-location of the floater shadow, and determines the z-location of the floater relative to the retina using the confocal filter. The treatment laser device receives the z-location of the floater from the SLO device, and directs a laser beam towards the z-location. The xy-scanner receives the SLO beam from the SLO device and directs the SLO beam towards the xy-location of the floater shadow. The xy-scanner also receives the laser beam from the treatment laser device and directs the laser beam towards the xy-location of the floater shadow.

Generation of treatment recommendations for topographic-based excimer laser surgical procedures is described that includes generating accurate cylinder compensation and spherical compensation values that are adjusted to compensate for unique characteristics of advanced topographic-based excimer laser surgical systems. Generating treatment recommendations generally includes determining a topographic vector from a topographic corneal map of the eye, determining a posterior astigmatism vector and an anterior astigmatism vector for the eye, and generating an interior astigmatism vector using the topographic vector, the posterior astigmatism vector, the anterior astigmatism vector, and a manifest astigmatism vector. In various embodiments, the cylinder compensation is generated using the interior astigmatism vector and the posterior astigmatism vector, and the spherical compensation is generated using an initial spherical compensation modified by a topographic addback modifier and a cylinder addback modifier.

An adjustable flow glaucoma diverter is disclosed herein. For example, in one embodiment, an adjustable flow diverter may include an outflow drainage tube having a proximal inflow region and a distal outflow region. The proximal inflow region may include an aperture defining a fluid inlet range disposed at a location allowing fluid to flow therethrough. The diverter also includes an inflow control assembly located at the proximal inflow region. The inflow control assembly may include a control element configured to slidably mate with the proximal inflow region and a spring element. The spring element is configured to be activated by non-invasive energy and, upon activation, slidably move the control element along the proximal inflow region such that (a) the one or more apertures are accessible and have a first fluid flow cross-section, or (b) the one or more apertures are at least partially covered by the control element and have a second, different fluid flow cross-section.

A method of removing microvessels includes applying a burst of acoustic energy at a target location, applying a pulse of optical energy at the target location, and promoting cavitation at the target location by synchronizing an arrival of the burst of acoustic energy and the optical energy at the target location. The burst of acoustic energy has a pressure below 5.0 MPa. The pulse of optical energy at the target location has a fluence less than 100 mJ / cm2. At least a portion of the pulse is concurrent with the burst and the optical energy has an optical area that is overlapping with an acoustic area of the acoustic energy at the target location.

A non-sliding, non-sutured hands-free contact lens assembly for ophthalmic procedures utilizes a number of micro structures strategically placed on the bottom of either the contact lens or the bottom of a contact lens holder ring. After the contact lens, or the contact lens assembled with the contact lens holder ring, is placed on the cornea of the eye and centered, a surgeon applies downward pressure either on the contact lens itself or on the lens holder ring. This secures the lens assembly to the cornea due to increased friction between the micro structures and the tissues of the eye when the micro structures penetrate through the tear film and, optionally, viscous solution film and into the contact with superficial layer of cornea or other parts of the eye, thus temporarily anchoring the contact lens, or lens holder, to the desired surgical site.

In certain embodiments, an ophthalmic surgical laser system for imaging and treating an eye floater includes an SLO subsystem, a treatment laser subsystem, a scanner, optical elements, and a computer. The SLO subsystem provides an SLO laser beam with an SLO focal point, and the treatment laser subsystem provides a treatment laser beam with a treatment focal point that spatially coincides with the SLO focal point. The scanner scans the SLO laser beam across a scan region and directs the treatment laser beam to the xy-location of the scan region. The optical elements aim the SLO laser beam and the treatment laser beam at substantially the same point of the scan region. The computer receives an SLO image of the floater, determines an xy-location of the floater, and instructs the treatment laser subsystem to direct the treatment laser beam towards the xy-location and the z-scan location of the floater.

Disclosed herein are systems and methods for compensating for a tilt of an intraocular lens (IOL) and systems and methods for adjusting the IOL. For example, one of the methods can comprise capturing one or more optical coherence tomography (OCT) images of an eye of a subject when the IOL is implanted within the eye of the subject. The method can also comprise generating a fixation target such that the fixation target is visible to the eye of the subject and moving the fixation target until a transverse plane of the IOL is perpendicular or substantially perpendicular to an optical axis of an ophthalmic system. The method can also comprise directing a laser beam generated by a laser of the ophthalmic system at the IOL.

Certain embodiments disclose a contact lens holder including a rim forming a lens receptacle for receiving a lens and a flange integrally formed with and extending from the rim, flange comprising at least one tab, wherein at least one of a posterior surface of the flange and a posterior surface of the at least one tab comprises micro-structuring.

Provided herein is a probe for treating an eye of a patient. In one or more embodiments, the probe includes a body, and a tubular element having a main lumen extending from the body, the tubular element comprising a distal end. The probe further includes a visualization optical fiber within the main lumen, the visualization optical fiber adapted to emit an illumination provided by at least one of a plurality of light sources connected to the visualization optical fiber. In some embodiments, the probe further includes an optical switching system (e.g., a time-division multiplexor) operable with the plurality of light sources, wherein the optical switching system is adapted to independently control each of the plurality of light sources. By providing time-division multiplexing between different surgical light sources, quasi-simultaneous illumination delivery through the same optical path may be achieved.

Provided are multi-wavelength phototherapy devices, systems and methods for the treatment of a disorder or disease, including multi-wavelength low level light therapy (“PBM”), in particular to multi-wavelength PBM and other phototherapy systems and methods for improving functionality in and / or restoring functionality to a cell and / or tissue through the coordinated and targeted delivery to the cell or tissue of two or more doses of light having distinct wavelengths, wherein the two or more doses of light, when delivered in a coordinated fashion, can stimulate the activity of two or more light sensitive factors that, when activated, provide and / or enhance a desired target cell functionality. Ophthalmic phototherapy devices, systems, and treatment methods to expose an eye to selected multi-wavelengths of light to promote the healing of damaged or diseased eye tissue. The devices include a housing having an interior; an eyepiece disposed on the housing and configured and arranged for placement of an eye of the patient adjacent the eyepiece; a first light source producing a first light beam having a first therapeutic wavelength and disposed within the housing; a second light source producing a second light beam having a second therapeutic wavelength and disposed within the housing, where the second therapeutic wavelength differs from the first therapeutic wavelength by at least 25 nm.

Example eye treatments detennine an area at a surface of a cornea for delivery of a cross-linking agent. The example treatments disrupt tissue at the area at the surface of the conlea up to a depth corresponding to apical layers of superficial squamous cells of the cornea, e.g., no greater than approximately 10 μm to approximately 15 lm. The example treatments apply a cross-linking agent to the area at the surface of the cornea. The cross-linking agent is transmitted through the disrupted area at a greater rate relative to non disrupted areas of the cornea. The example treatments deliver photoactivating light to the cornea. The photoactivating light activates the cross-linking agent to generate cross-linking activity in the cornea.

A system includes a light source configured to emit treatment light and an optical coherence tomography (OCT) device. The system further includes a surgical instrument including a distal portion configured to be inserted into an eye of a patient. An optical fiber is coupled to the light source and to the OCT device and (a) conducts the treatment light along the distal portion to be emitted from a tip of the distal portion and (b) conducts detection light from the OCT device along the distal portion to be emitted from the tip of the distal portion and conduct a reflected portion of the detection light to the OCT device. A controller obtains image data from the OCT device and operates the light source per the image data, e.g., selects a number of pulses for the treatment light based on a thickness of a trabecular meshwork apparent in the image data.

To treat corneal ectatic disorders, systems and methods can precisely apply photoactivating light to specified areas of a cornea treated with a cross-linking agent. An example system includes a light source that provides a photoactivating light to photoactivate a cross-linking agent applied to an eye. The system includes optical element(s) that transmit the photoactivating light to the eye according to a pattern defined by a plurality of treatment zones. The treatment zones are delivered to different respective areas on the eye. The plurality of treatment zones includes at least a first treatment zone and a second treatment zone. The first treatment zone provides a first dose of the photoactivating light. The second treatment zone provides a second dose of the photoactivating light. The first dose is greater than the second dose. The first treatment zone is disposed within an inner boundary of the second treatment zone.

The present disclosure describes an optical probe for applying a laser light to at least the flat portion of the ciliary body and optionally other areas, such as the trabecular mesh, the ciliary crown and / or the ciliary sulcus of the eye, the present invention relates to methods, such as for treating glaucoma, reducing intraocular pressure (IOP), improving the outflow of aqueous humor from the eye, and / or reducing the accumulation of aqueous humor within the eye. The optical probe may be adapted for simultaneous treatment of a plurality of different regions, tissues, or eye bodies of the eye, or for sequential treatment of a plurality of different regions, tissues, or eye bodies of the eye.

Systems and methods for performing laser and phacoemulsification operations. Systems that provide full position and usage around a patient. An integrated laser-ultrasound, including femto-phaco, system having a safety interlock preventing operation of laser during phacoemulsification procedure. An integrated laser-ultrasound, including femto-phaco, system having a movable and repositionable laser arm and laser head. A laser system and an integrated laser-ultrasound, including femto-phaco, system that provides for 330 degrees of clocking positioning around an eye of the patient. Non-handed integrated laser-ultrasound, including femto-phaco, systems.

To provide a system and method of utilizing one or more images of an eye in medical procedures.SOLUTION: The disclosure provides a system that may acquire, via an image sensor, an image of an eye of a person; may determine a location of an iris of the eye from the image; may determine a position of a suction ring from the image; may display, via a display, the image; may display, on the image via the display, a first graphic overlay that indicates the location of the iris of the eye; may display, on the image via the display, a second graphic overlay that indicates the position of the suction ring; may determine multiple iris structures from the image; may determine an orientation of the eye based at least on the multiple iris structures from the image; and may display, via the display, information that indicates the orientation of the eye.SELECTED DRAWING: Figure 1A

A method of altering a refractive property of a crosslinked acrylic polymer material by irradiating the material with a high energy pulsed laser beam to change its refractive index. The method is used to alter the refractive property, and hence the optical power, of an implantable intraocular lens after implantation in the patient's eye. In some examples, the wavelength of the laser beam is in the far red and near IR range and the light is absorbed by the crosslinked acrylic polymer via two-photon absorption at high laser pulse energy. The method also includes designing laser beam scan patterns that compensate for effects of multiphone absorption such as a shift in the depth of the laser pulse absorption location, and compensate for effects caused by high laser pulse energy such as thermal lensing. The method can be used to form a Fresnel lens in the optical zone.

A hand-held aspiration device is provided which has a relatively small suction volume along a suction path to improve responsiveness of the aspiration device when the device is activated. The device may be manually powered and may be provided without electronic controls. The device has a suction path which may be purged into a disposal enclosure to reduce the volume of material under the influence of the suction pressure during the procedure. The suction source may also be part of the hand-held unit to further reduce the suction path and suction volume.

An ophthalmic laser system for generating a first beam at a first wavelength on a first beam path and a second beam at a second wavelength on a second beam path, and directing optics to selectively direct the first beam or the second beam to a treatment beam path. The ophthalmic laser system incorporates a reflex coaxial illuminator comprising a reflex mirror movable on an axis from a position out of the treatment beam path to a position in the treatment beam path to direct illumination into an illumination path coaxial with the treatment beam path. The reflex mirror is adapted to transmit a beam that follows the second beam path.

A method is described of improving adhesion of an ocular implant (10) to corneal tissue by forming an implant adhesive layer (14) on the ocular implant (10), the implant adhesive layer (14) having greater adhesive strength than a rest of the implant (10). This is done by making chemical and / or physical changes on an anterior surface of the implant (10) that make the implant adhesive layer (14) more adhesive than the rest of the implant (10).

Certain embodiments provide a vacuum generation system with an override PID controller, a proportional valve, and a vacuum generator. The override PID controller allows the vacuum generation system to control the operating range of supply air pressure that is provided to the vacuum generator. By controlling the operating range of the supply air pressure, the vacuum generation system is able to avoid entering the decreasing or non-monotonic region of the vacuum generator.