In a laser beam delivery system for an ophthalmic laser system, a single multi-use beam sampler is employed to form three sampled laser beams, including two for redundant laser energy monitoring and one for laser focal point depth measurement. The beam sampler is a transparent plate with preferably parallel front and back surfaces. The front surface reflects a fraction of the incoming beam to form the first sampled beam toward an energy monitoring detector. The back surface reflects another fraction of the beam to form a second sampled beam exiting backwardly from the front surface toward another energy monitoring detector. An objective lens focuses the transmitted beam onto a target, and collects back reflected or scattered light from the target to form a return beam. The back surface of the beam sampler reflects a fraction of the return beam to form the third sampled beam toward a third detector.

The invention relates to a method for providing control data for an eye surgical laser (12) of a treatment apparatus (10) for removing tissue (14). A control device (18) ascertains (S10) a corneal geometry of a cornea (22) and an ocular wavefront (32) of a human or animal eye (16) from predetermined examination data. Further, a corneal wavefront (28) is ascertained (S12) from the corneal geometry by means of a physical model, an internal wavefront (34) is calculated (S16) from a difference of the ocular wavefront (32) and the corneal wavefront (28), a wavefront (36) to be achieved is calculated (S18) from a difference of a preset target wavefront (38) and the calculated internal wavefront (34), a target corneal geometry (40) is ascertained (S20) from the wavefront (36) to be achieved by means of the physical model, wherein the target corneal geometry (40), which results in the wavefront (36) to be achieved upon a passage of the input wavefront (30) through a target cornea with the target corneal geometry (40), is determined by means of the physical model, a tissue geometry to be removed is calculated (S22) from a difference of the corneal geometry and the target corneal geometry (40), and control data for controlling the eye surgical laser (12), which includes the tissue geometry to be removed for removing the tissue, is provided (S24).

The present invention relates to an ophthalmic treatment apparatus and a control method therefor, and provides an ophthalmic treatment apparatus and a control method therefor, the ophthalmic treatment apparatus comprising: a setting unit formed so as to set a treatment mode; a therapeutic light emission unit emitting therapeutic light at a target position of an eyeground multiple times so as to perform treatment; a monitoring unit for monitoring information on the state of the target position by the therapeutic light during the emission of the therapeutic light; and a control unit for determining whether a treatment intensity according to the treatment mode has been reached, by using the information monitored by the monitoring unit, and for controlling an operation of the therapeutic light emission unit on the basis of the determination.

An ophthalmological laser treatment device and method for controlling an ophthalmological laser treatment device are disclosed, the device comprising a base station which has a treatment laser source configured to generate a treatment laser beam, a control module, an application head, and an arm arranged between the base station and the application head, the application head including a primary laser beam monitor which is retractable out of the treatment laser beam and a secondary laser beam monitor.

An ophthalmological apparatus comprises a laser source for producing a pulsed laser beam, a scanner system for deflecting the pulsed laser beam at a treatment speed in the eye tissue along a scanning treatment line, a first scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a first scanning movement component superposed on the scanning treatment line in a first scanning direction at a first scanning speed that is higher as compared to the treatment speed, and a second scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a second scanning movement component, which is superposed on the first scanning movement component in a second scanning direction, which is at an angle to the first scanning direction, at a second scanning speed that is higher as compared to the first scanning speed.

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 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 of the patient's eye, aligning the internal reflectors with the quadrants of the patient's eye, directing laser pulses through each internal reflector until the trabecular meshwork in each quadrant of the patient's eye has been treated.

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.

A compact system for performing laser ophthalmic surgery is disclosed. The systems and methods may be used to measure corneal thickness or other anatomy to prepare a treatment plan for any of numerous treatments, such as LASIK, PRK, intra stromal lenticular lens incisions, cornea replacement, or any other treatment. By using a reduced power femtosecond laser backscatter may be measured to calculate distances such as distances between an interior boundary and an exterior boundary of a cornea or other tissue.

An ophthalmological apparatus comprises a laser source for producing a pulsed laser beam, a scanner system for deflecting the pulsed laser beam at a treatment speed in the eye tissue along a scanning treatment line, a first scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a first scanning movement component superposed on the scanning treatment line in a first scanning direction at a first scanning speed that is higher as compared to the treatment speed, and a second scanning apparatus connected upstream of the scanner system for deflecting the pulsed laser beam and for producing a second scanning movement component, which is superposed on the first scanning movement component in a second scanning direction, which is at an angle to the first scanning direction, at a second scanning speed that is higher as compared to the first scanning speed.

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.