A surgical laser capsulorhexis system includes a laser source, configured to generate a laser cutting beam; a beam guidance system, configured to guide the laser cutting beam from the laser source; a beam focuser, configured to guide the laser cutting beam from the laser source and to generate a focused laser cutting beam, the focused laser cutting beam having a two-dimensional beam pattern; a beam coupler, configured to redirect the focused laser cutting beam; and a patient interface lens, configured to guide the redirected focused laser cutting beam to a tissue surface of a procedure eye.

Laser assisted cataract surgery methods and devices utilize one or more treatment laser beams to create a shaped opening in the anterior lens capsule of the eye when performing a capsulotomy procedure. The visual axis of the eye may be determined, during surgery for example, with a laser beam on which the patient is fixated. The capsulotomy may be centered on the identified visual axis. This enables the use of capsulotomy-centering IOLs centered on or in close proximity to the visual axis. The orientation of a toric IOL may be assessed during or after placement by observing the reflection from the back of the eye of a laser beam on which the patient is fixated.

Systems and methods automatically locate optical surfaces of an eye and automatically generate surface models of the optical surfaces. A method includes OCT scanning of an eye. Returning portions of a sample beam are processed to locate a point on the optical surface and first locations on the optical surface within a first radial distance of the point. A first surface model of the optical surface is generated based on the location of the point and the first locations. Returning portions of the sample beam are processed so as to detect second locations on the optical surface beyond the first radial distance and within a second radial distance from the point. A second surface model of the optical surface is generated based on the location of the point on the optical surface and the first and second locations on the optical surface.

A method of reversibly separating an imaging assembly from an optical path in a laser surgical system includes generating an electromagnetic beam, propagating the electromagnetic beam from the beam source to a scanner along an optical path, the optical path comprising a first optical element that attenuates the electromagnetic beam, reversibly inserting a confocal bypass assembly into the optical path, diverting the electromagnetic beam along a diversion optical path around the first optical element, wherein the confocal bypass assembly automatically exits the optical path when a power loss occurs to one or more components of the system.

One embodiment is directed to a patient interface system for ophthalmic intervention on an eye of a patient, comprising: a housing; an optical lens coupled to the housing and having a focal axis; a eye surface engagement assembly coupled to the housing and comprising an inner seal having an inner seal diameter and being configured to circumferentially engage the eye, an outer seal having an outer seal diameter and being configured to circumferentially engage the eye, and a tissue migration bolster structure configured to be positioned circumferentially between the inner and outer circumferential seals and to prevent migration of tissue of the eye toward the eye surface engagement assembly when a vacuum load is applied within the assembly to cause vacuum engagement of the inner and outer seals against the eye.

Devices and methods for use in laser-assisted surgery, particularly cataract surgery. Specifically, the use of an optical fiber with a proximal and distal end, wherein the distal end has a non-orthogonal angle with the diameter of the optical fiber, to create an off-axis steam bubble for cutting and removing tissue in an operative region. Where the optical fiber is bent, rotating the fiber creates a circular cutting path for the steam bubble, allowing access to tissues that may normally be blocked by obstructions and obstacles.

Method for producing ultraintense laser pulses in which Stimulated Raman Back-Scattering (SRBS) amplifies and compresses a seed pulse, as well as an inventive compact plasma device which may implement the method. SRBS may be achieved by counter-propagating the seed pulse and a pump pulse through a few millimeter-long plasma having a plasma frequency equal to the difference between the pump and the seed pulse frequencies. Dichroic mirrors may be arranged to provide two amplifying and compression passes through the plasma, allowing greater seed pulse amplification by mitigating Landau damping within the plasma that would occur in a single pass of a plasma of double the length. Alternate examples provide for 2n number of amplification and compression passes by providing n short plasma columns, where n2, and additional, appropriately arranged dichroic mirrors. The compact size of the device, and the ultraintense, ultrashort pulses it emits, suit the device to dermatological applications.

Methods and apparatus are configures to measure an eye without contacting the eye with a patient interface, and these measurements are used to determine alignment and placement of the incisions when the patient interface contacts the eye. The pre-contact locations of one or more structures of the eye can be used to determine corresponding post-contact locations of the one or more optical structures of the eye when the patient interface has contacted the eye, such that the laser incisions are placed at locations that promote normal vision of the eye. The incisions are positioned in relation to the pre-contact optical structures of the eye, such as an astigmatic treatment axis, nodal points of the eye, and visual axis of the eye.

A system for therapy of the eye by treating tissue with therapeutic radiation using nonlinear interaction. A laser device is provided, which delivers the therapeutic radiation. The therapeutic radiation is focussed by a focussing device in an image field, and xy scanners and z scanners shift the focus laterally and longitudinally within a treatment volume. The therapeutic radiation is either a second short pulse radiation or a first short pulse radiation, each of which have a spectral centroid within a wavelength range defined by the short pulse properties. The system is particularly corrected with regard to longitudinal chromatic aberrations and lateral chromatic aberrations such that the spectral characteristic curves of the two aberrations each have a local extreme within the wavelength ranges, and a certain tolerance within the wavelength ranges is not exceeded, therefore the characteristic curves are very shallow.

The present disclosure provides a system and method for indirectly determining weight on eye, the weight resulting from contact between the eye and a docking apparatus for laser ophthalmic surgery. The system includes a docking apparatus, a measuring device, a display and a processor that determines a relative distance between a detectable position of a component of the docking apparatus and a neutral position of the eye, determines the weight on eye by reference to sensed force-distance reference data, and generates and transmits a pictorial representation of weight on eye to a display. The disclosure further provides a method for indirectly determining weight on eye, the weight resulting from contact between the eye and a docking apparatus for laser ophthalmic surgery.