Systems for Ophthalmic Laser Surgery

An ophthalmic laser and surgery technology, applied in the system field of ophthalmic laser surgery, can solve the problem that the thermal damage of corneal tissue cannot be ruled out
CN103892959BActive Publication Date: 2016-04-06ALCON INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ALCON INC
Publication Date
2016-04-06

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Abstract

The invention relates to a system for ophthalmic laser surgery. The system comprises a pulse laser radiation source (110), a scanner (160), an electronic control unit (190) and a modulator unit (170). The pulse laser radiation source (110) has radiation parameters which meet requirements for cutting operation on ocular tissue (especially cornea); the scanner (160) is used for realizing deflection of laser radiation; the electronic control unit (190) is arranged for controlling the scanner according to preset cutting geometric figures; the modulator unit (170) is used for modulating laser pulse radiating from the pulse laser radiation source (110). Further, the electronic control unit (190) is particularly arranged for controlling the modulator unit (170) according to beam-deflection patterns determined according to the cutting geometric figures so that at least part of the laser pulse in the preset area of the beam-deflection patterns has low pulse energy or is suppressed.
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Description

[0001] This application is a divisional application of an invention with a filing date of May 26, 2009, application number 200980159515.3 (international application number PCT / EP2009 / 003730) and an invention titled "system for ophthalmic laser surgery". technical field

[0002] The present invention relates to systems for ophthalmic laser surgery. Background technique

[0003] In refractive eye surgery, vision defects are corrected by intervention in the patient's eye to alter the refractive properties of the eye. In this regard, the so-called LASIK procedure (Laser In Situ Keratomileusis) is of great importance, in which first a planar corneal incision is made, as a result of which a small disc cap called a flap is created. The flap can be folded aside to expose the underlying corneal tissue, the stroma. The stromal tissue is then ablated using a laser (usually an excimer laser) according to the resection pattern determined for each patient. The flap is then folded back; ...

Claims

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