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Device for ophthalmic laser surgery

An ophthalmic laser and equipment technology, applied in laser surgery, ophthalmic surgery, surgery, etc., can solve the problems of no longer being available, difficult to obtain incision depth tolerance, etc.

Inactive Publication Date: 2015-02-18
WAVELIGHT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sought-after notch depth tolerances of less than 5 μm are therefore difficult or no longer achievable

Method used

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  • Device for ophthalmic laser surgery
  • Device for ophthalmic laser surgery

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Experimental program
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Embodiment Construction

[0034] A laser surgery device is indicated generally at 10 according to two embodiments.

[0035] The laser surgery apparatus 10 according to the first embodiment has a femtosecond laser (fs laser) 12 that can emit pulsed laser radiation with a pulse width in the femtosecond order. The laser radiation travels along a beam path 14 and ultimately reaches the eye 16 to be treated. Various components for guiding and shaping the laser radiation are arranged in the beam path 14 . In particular, these components include a focusing objective 18 (such as an F-theta objective) and also a scanner 20 connected upwards from the objective 18, by means of which the laser radiation provided by the laser 12 can be transmitted in a plane perpendicular to the beam path 14. (x-y plane) deflection. A roughly added coordinate system illustrates this plane, as well as the z-axis defined by the direction of the beam path 14 . The scanner 20 is constructed, for example, in a manner known per se wit...

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PUM

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Abstract

The present invention relates to a device 10 for ophthalmic laser surgery, with an optical imaging system for imaging a treatment laser beam 14 onto a focal point, with a temperature-measuring means for the measurement of a temperature assigned to the imaging system, and with an electronic control arrangement (22) connected to the temperature-measuring means and designed to control the focal point adjustnment as a function of the measured temperature. Moreover, the present invention also relates to an associated method.

Description

technical field [0001] The present invention relates to apparatus and related methods for ophthalmic laser surgery. Background technique [0002] Pulsed laser radiation is used in many techniques for treating the human eye. The local control of the beam focus of the laser beam along the z direction (according to customary notes, this refers to the propagation direction of the laser beam) is always achieved with reference to a known reference point or a known reference surface in the coordinate system of the laser device. [0003] Depending on the type of treatment, different reference points or surfaces can be used as a reference for the z-control of the beam focus. With some of these techniques, the eye to be treated is brought against a transparent contact element which, with its contact surface facing the eye, forms a reference surface for the positioning of the beam focus in the z direction. In particular, therapeutic techniques for producing incisions in eye tissue by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/01
CPCA61F9/00831A61F2009/00897A61B2017/00084A61F9/009A61F2009/00844A61F9/00836A61F2009/00872A61F9/007A61F9/008
Inventor 克里斯托夫·德尼茨基克劳斯·沃格勒奥拉夫·基特尔曼克劳迪娅·格舍博特
Owner WAVELIGHT GMBH