An ophthalmic laser apparatus comprises a laser light source; a light guide device, configured to guide a laser beam generated from the laser light source; a support bracket, configured to support a patient's head for the patient's eye to be perpendicular to a horizontal plane; a positioning device, configured to position a position of the patient's eye; a laser beam projector, the laser beam projector being movable to be aligned with the patient's eye and projecting the laser beam from the light guide device; a moving stand, configured to move the positioning device and the laser beam projector along an X direction, a Y direction, and/or a Z direction; and a controller, configured to control the laser light source to irradiate the laser beam and to control the laser beam projector to project the laser beam toward the patient's eye.

The invention relates to a treatment apparatus for an eye treatment, at least comprising: at least one laser beam source configured for emission of laser pulses, at least one beam exit device, which is configured to pass the respective laser pulses with a predetermined laser pulse cross-sectional profile to respective impingement positions in a treatment surface of a preset treatment volume of an eye to be treated, a control device, which is configured to ascertain coordinates of the respective impingement positions in the treatment surface according to at least two predetermined coordinate ascertaining methods for the preset treatment volume and the predetermined laser pulse cross-sectional profile. The control device is configured to ascertain respective expectable treatment roughnesses of the treatment volume depending on coordinate ascertaining method, according to a predetermined roughness ascertaining method for the at least two coordinate ascertaining methods, to determine the predetermined coordinate ascertaining method of a smallest expectable treatment roughness depending on coordinate ascertaining method as the coordinate ascertaining method to be adjusted, and to adjust the coordinates of the respective impingement positions according to the coordinate ascertaining method to be adjusted, in the at least one beam exit device.

In a cataract procedure, a new geometry of a lens segmentation pattern reduces the required phacoemulsification energy to remove the lens. The lens segmentation process employs a three-dimensional spiral lens segmentation pattern that resembles a spiral staircase or a spiral ramp, to incise a vertical cylindrical volume of the lens into a three-dimensional spiral that can be more easily removed. The segmentation patter is formed by scanning the laser focal spot in a layer by layer manner, each layer including a closed curve corresponding to the outer boundary of the segmentation volume, and a filled area inside the closed curve forming a horizontal step of the spiral staircase. The horizontal steps of vertically adjacent layers are offset by an offset angle, creating the spiral lens segmentation pattern that form a spiral volume.

Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for photorefractive keratectomy. In an embodiment, an ophthalmic surgical laser system comprises a laser source generating a pulsed laser beam and a laser delivery system delivering the pulsed laser beam to a cornea of an eye. A patient interface couples to and constrains the eye relative to the laser delivery system. A controller controls the laser delivery system to perform an anterior surface volume dissection on the cornea.

A lens device for use in Selective Laser Trabeculoplasty (SLT) procedures is provided. The lens device includes four internal reflectors, each having a reflector surface configured to direct a laser beam pulse toward the trabecular meshwork region of a patient's eye. Each of the four internal reflectors is arranged to correspond to a particular quadrant of the patient's eye to enable the entire 360-degrees of the trabecular meshwork to be treated with laser pulses without rotation of the lens device. A method for performing an SLT procedure using the lens device is also provided. The method includes placing the lens device on the patient's eye, aligning the internal reflectors with the quadrants of the patient's eye, and directing laser pulses through each internal reflector until the trabecular meshwork in each quadrant of the patient's eye has been treated.

The invention provides an excimer laser system including a means for authenticating laser probes to be used with the excimer laser system via radio-frequency identification techniques.

A method of treating a subject having glaucoma comprises performing excimer laser trabeculostomy (ELT) on a subject having glaucoma and having previously undergone a failed treatment or a treatment that has been rendered ineffective by progression of the disease. In some examples, the failed treatment is a non-surgical treatment comprising administering medicated eye drops. In some examples, the failed treatment is a laser treatment or surgical treatment, such as a trabeculoplasty, iridotomy, iridectomy, trabeculectomy, trabeculotomy, goniotomy, surgical insertion of a shunt or implant, deep sclerectomy, viscocanalostomy, or a combination thereof.

A laser system calibration method and system are provided. In some methods, a calibration plate may be used to calibrate a video camera of the laser system. The video camera pixel locations may be mapped to the physical space. A xy-scan device of the laser system may be calibrated by defining control parameters for actuating components of the xy-scan device to scan a beam to a series of locations. Optionally, the beam may be scanned to a series of locations on a fluorescent plate. The video camera may be used to capture reflected light from the fluorescent plate. The xy-scan device may then be calibrated by mapping the xy-scan device control parameters to physical locations. A desired z-depth focus may be determined by defining control parameters for focusing a beam to different depths. The video camera or a confocal detector may be used to detect the scanned depths.

An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed by the XY and Z scanners at a location tangential to a parallel of latitude of the surface of the lenticule. The XY and Z scanners then move the scan line in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, and a prism is used to change the orientation of the scan line of the high frequency scanner between successive sweeps. In each sweep, the sweeping speed along the meridian is variable, being the slowest at the edge of the lenticule and the fastest near the apex.

A full depth ophthalmic surgical system includes a femtosecond laser source and an optical coherence tomographer. The system is capable of performing surgical procedures along the entire length of the eye from the cornea to the retina. The optical system of the ophthalmic surgical system is optimized to focus the laser beam and imaging light in the vitreous humor of the eye. In some embodiments, the system includes a video camera with a tunable lens before it to image the entire length of the eye. For procedures performed posterior to the lens, a method for calibrating the full depth ophthalmic surgical system is also provided. The system can be used to perform treatment in the vitreous humor, including treating floaters and liquification of the vitreous humor.