A61F2009/00872

Device for processing eye tissue by means of a pulsed laser beam

For processing eye tissue using a pulsed laser beam (L), an ophthalmological device includes a projection optical unit for the focused projection of the laser beam (L) into the eye tissue, and a scanner system upstream of the projection optical unit for the beam-deflecting scanning of the eye tissue with the laser beam (L) in a scanning movement (s′) performed over a scanning angle along a scanning line(s). The projection optical unit is tilted about an axis of rotation (q) running perpendicularly to a plane defined by the scanning line(s) and the optical axis (o) of the projection optical unit, the tilting of the projection optical unit tilting the scanning line (s) in said plane. Tilting of the scanning line(s) enables a displacement—dependent on the scanning angle—of the focus of the laser pulses projected into the eye tissue without vertical displacement of the projection optical unit.

Device for processing eye tissue by means of pulsed laser beams
09737438 · 2017-08-22 · ·

An ophthalmological device (1) for treating eye tissue by means of pulsed laser beams (L) comprises a laser system (12) which is designed, in a first mode of operation, to generate pulsed laser beams (L) with a wavelength in the NIR infrared range and, in a second mode of operation, to generate pulsed laser beams (L) with a wavelength in the UVA ultraviolet range. The ophthalmological device (1) moreover comprises a focusing system (10) with a projection optical unit (11), which is designed, in the first mode of operation, to project the pulsed laser beams (L) in the NIR infrared range into the lens (21) of the eye, which pulsed laser beams are focused to a first spot size (d1) by means of a first zoom function (101) for the purpose of disintegrating eye tissue, and, in the second mode of operation, to project the pulsed laser beams (L) in the UVA ultraviolet range into the cornea (22) of the eye, which pulsed laser beams are focused to a second spot size (d2) which is substantially smaller than the first spot size (d1) by means of a second zoom function (102), which differs from the first zoom function (101), for the purpose of creating tissue cuts.

Laser System and Method for Correction of Induced Astigmatism

There is provided a system, apparatus and methods for developing laser systems that can create precise predetermined clear corneal incisions that are capable of reducing induced astigmatism. The systems, apparatus and methods further provide laser systems that can provide these incisions at or below Bowman's membrane.

Laser eye surgery system
11426068 · 2022-08-30 · ·

A laser eye surgery system includes a laser source, a ranging subsystem, an integrated optical subsystem, and a patient interface assembly. The laser source produces a treatment beam that includes a plurality of laser pulses. The ranging subsystem produces a source beam used to locate one or more structures of an eye. The ranging subsystem includes an optical coherence tomography (OCT) pickoff assembly that includes a first optical wedge and a second optical wedge separated from the first optical wedge. The OCT pickoff assembly is configured to divide an OCT source beam into a sample beam and a reference beam. The integrated optical subsystem is used to scan the treatment beam and the sample beam. The patient interface assembly couples the eye with the integrated optical subsystem so as to constrain the eye relative to the integrated optical subsystem.

VISION CORRECTION APPARATUS AND METHOD FOR CONTROLLING SAME
20170231819 · 2017-08-17 ·

The vision correction apparatus according to the present invention comprises: a cutting-off beam generating unit that generates a cutting-off beam for cutting off a part of the cornea for a vision correction surgery, a welding beam generating unit that generates a welding beam having a wavelength in a near-infrared band for welding a part of the cut cornea by irradiating the welding beam to the cut position of the cornea, a beam delivery unit that delivers the cutting-off beam and the welding beam to the cut position of the cornea, an image unit that obtains image information on the cut position of the cornea, and a control unit that controls an irradiation position of the welding beam based on the cut position information of the cornea obtained by the image unit.

CONTROLLING THE TEMPERATURE OF THE CORNEA DURING OPHTHALMIC SURGERY
20220304853 · 2022-09-29 ·

An ophthalmic surgical system for controlling a temperature of a cornea of an eye for a surgical procedure comprises a fluid management system and a computer. The fluid management system manages fluid within a channel structure created in the cornea of the eye. The computer instructs one or more of the controllable components to create the channel structure in the cornea. The channel structure provides a passageway between an interior of the eye and an exterior of the eye, and is proximate to a treatment site. The computer instructs the fluid management system to manage fluid within the channel structure in order to control the temperature of the cornea of the eye.

OPHTHALMIC PHOTOTHERAPY SYSTEM AND ASSOCIATED METHOD
20170225012 · 2017-08-10 ·

An ophthalmic phototherapy device and associated phototherapy treatment method tor promoting healing of damaged or diseased eye tissue. The ophthalmic phototherapy device includes a light emitting mechanism for transmitting light of at least one preselected wavelength to the eye tissue. The ophthalmic phototherapy method includes directing light of at least one wavelength for a selected period of time to a portion of damaged or diseased eye tissue, whereby the light transmitted to the damaged or diseased eye tissue stimulates cellular activity in the eye tissue to promote healing.

Introducing bubbles to improve cornea reshaping without the creation of a flap
11452638 · 2022-09-27 ·

Ultra-short pulsed laser radiation is applied to a patient's eye to create a row of bubbles oriented perpendicular to the axis of vision. The row of bubbles leads to a region of the eye to be ablated. In a second step, a femtosecond laser beam guided through the row of bubbles converts it to a channel perpendicular to the axis of vision. In a third step, a femtosecond laser beam is guided through the channel to ablate a portion of the eye. Using a femtosecond laser with intensity in the range of 10.sup.11-10.sup.15 W/cm.sup.2 for the second and third steps facilitates multi-photon ablation that is practically devoid of eye tissue heating. Creating bubbles in the first step increases the speed of channel creation and channel diameter uniformity, thereby increasing the precision of the subsequent multi-photon ablation.

Sweeping optical scanner of an apparatus for cutting-out a human or animal tissue

The present invention relates to an apparatus for cutting-out including a device for treating a L.A.S.E.R. beam generated by a femtosecond laser (1), and positioned downstream from said femtosecond laser, the treatment device comprising: a shaping system (3) positioned on the trajectory of said beam, for modulating the phase of the wave front of the L.A.S.E.R. beam according to a modulation set value calculated for distributing the energy of the L.A.S.E.R. beam in at least two impact points forming a pattern in its focal plane, an optical focusing system (5) downstream from the shaping system, the optical focusing system comprising a concentrator module for focusing the phase-modulated L.A.S.E.R. beam in a focusing plane and a depth-positioning module for displacing the focusing plane into a plurality of cutting-out planes, a sweeping optical scanner (4) positioned between the concentrator module and the depth-positioning module for displacing the pattern in the cutting-out plane in a plurality of positions.

METHOD FOR EYE SURGICAL PROCEDURE
20170216091 · 2017-08-03 · ·

A planning device for generating control data for a treatment apparatus, which by application of a laser device generates at least one cut surface in the cornea, and to a treatment apparatus having such a planning device. The invention further relates to a method for generating control data for a treatment apparatus, which by application of a laser device generates at least one cut surface in the cornea, and to a corresponding method for eye surgery. The planning device is thereby provided with a calculating device that defines the corneal incision surfaces, wherein the calculating device determines the corneal incisions such that after inserting an implant into the cornea, existing refractive errors are counteracted.