Methods and systems described herein determine the power to apply to an eye to change the color without damaging the eye. For example, the system may apply, using a first laser supply, a treatment beam to an eye to cause a treatment effect, such as formation of microbubbles. The system may apply, using a second laser supply, a probe beam to the eye to create a backscatter pattern based on detected microbubbles resulting from the treatment effect. The system may determine the backscatter pattern using a backscatter detector and determine the treatment effect based on the backscatter pattern. The system may modulate a power of the first laser supply based on the treatment effect.

Planning methods and a planning device for generating control data for a control unit of a laser treatment device for changing a refractive index in the treatment zone of a transparent organic material, a laser treatment device, and a computer program product. The invention facilitates precise correction of the refractive index and thus adjusts the previously planned profile of the refractive index in the transparent organic material region to be treated during the treatment. Even highly locally limited refractive index variations are correctable. Data describing the actual behavior of the indicator structure in the examination zone are considered, and control data is output to the control unit at specified intervals during the treatment of the material in the treatment zone, wherein the last described behavior of the indicator structure in the examination zone is constantly used as new actual behavior of the indicator structure to ascertain the control data.

An ophthalmic surgical system for treating an eye comprises a laser device and computer. The laser device directs laser pulses at a treatment frequency towards the eye according to a shot list, which comprises a sequence of laser shots and corresponding locations. The sequence of laser shots comprises substrings, where each substring indicates a local shot frequency at a location. The number of laser shots in a substring depends on the treatment frequency. The computer performs the following for the substrings: if there is a change in the treatment frequency, adjust the number of laser shots in a substring; check whether the substring indicates that a local shot frequency satisfies a maximum local frequency at the treatment frequency; and if the local shot frequency fails to satisfy the maximum local frequency, adjust the shot list such that the local shot frequency satisfies the maximum local frequency.

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 compact system for performing laser ophthalmic surgery is disclosed. An embodiment of the system includes a mode-locked fiber oscillator-based ultra-short pulsed laser capable of producing laser pulses in the range of 1 nJ to 5 J at a pulse repetition rate of between 5 MHz and 25 MHz, a resonant optical scanner oscillating at a frequency of 200 Hz and 21000 Hz, a scan-line rotator, a movable XY-scan device, a z-scan device, and a controller configured to coordinate with the other components of the system to produce one or more desired incision patterns. The system also includes compact visualization optics for in-process monitoring using a beam-splitter inside the cone of a patient interface used to fixate the patient's eye during surgery. The system can be configured such that eye surgery is performed while the patient is either sitting upright, or lying on his or her back.

The invention relates to a method for providing control data for an ophthalmological laser (12) of a treatment apparatus (10) as well as to an surgical procedure, wherein the method comprises the following steps performed by at least one control device (18): Presetting a course of a Bowman's membrane (34) of a cornea of an eye (14) of a patient depending on at least one patient information; determining an incision course at least for an anterior interface (20) of a volume body (16) to be removed in a stroma (36) of the eye (14) depending on the course of the Bowman's membrane (34) such that a preset geometric relation to the Bowman's membrane (34) is formed by the anterior interface (20); and generating the control data for controlling the laser (12) by means of the control device (18) such that it emits pulsed laser pulses in a shot sequence onto the eye. Further, the invention relates to a control device (18), to a treatment apparatus (10), to a computer program as well as to a computer-readable medium.

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 for aligning a system for laser-based ametropia correction relative to a patient's eye to be treated is disclosed. Predefined pre-operative measurement data which characterize at least predetermined structures of the patient's eye is provided. The predetermined structures include a part of the patient's eye to be treated. In addition, the method includes measuring at least one part of the predetermined structures of the patient's eye using an OCT system immediately before and/or during treatment for ametropia correction of the patient's eye and providing OCT measurement data, and comparing the OCT measurement data and the predefined pre-operative measurement data and preparing comparative data. The method also includes ascertaining a position and/or orientation of the part of the patient's eye to be treated relative to the system and aligning the system relative to the patient's eye using the ascertained position and/or orientation of the part of the patient's eye.