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Device, method and control program for ophthalmologic, particularly refractive, laser surgery

A technology for laser surgery and program control, applied in laser surgery, ophthalmic surgery, ophthalmic treatment, etc.

Active Publication Date: 2011-06-08
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the problem is to calculate in terms of space and time the sequence of laser pulses that interact with the cornea, specifically the stroma, to achieve the desired corneal remodeling

Method used

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  • Device, method and control program for ophthalmologic, particularly refractive, laser surgery
  • Device, method and control program for ophthalmologic, particularly refractive, laser surgery
  • Device, method and control program for ophthalmologic, particularly refractive, laser surgery

Examples

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Embodiment Construction

[0037] figure 1 In , an eye to be treated with refractive laser surgery is schematically indicated at 10 . The cornea of ​​the eye 10 and the rim of the pupil are indicated at 12 and 14 respectively.

[0038] according to figure 1 In a manner known per se, the laser surgery device shows a fixed light source (eg LED or laser) 18 that emits a (weak) fixed beam 18' and at which the patient's line of sight is guided in order to fix the eye position.

[0039] The laser surgery device further includes a therapeutic laser 20 that emits therapeutic radiation 20 ′ that is routed via lens 22 to scanner mirrors 24 and 24 ′ and directed onto eye 10 via deflecting mirror 26 . For LASIK treatment, the laser 20 can be, for example, an excimer laser with an irradiation wavelength of 193 nm. It should be understood that other therapeutic wavelengths may also be used if desired for other therapeutic purposes. A programmed computer C controls the laser 20 and the scanner mirrors 24 and 24' a...

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Abstract

The invention discloses a device for ophthalmologic, particularly refractive, laser surgery, which aligns a desired ablation profile with a predetermined corneal point, which it calculates from the image data of an eye tracker, while taking the depth of the anterior chamber of the eye, including the thickness of the cornea, individually measured for the respective patient into consideration.

Description

technical field [0001] The present invention relates to devices for use in ophthalmology, in particular refractive laser surgery. Further, the invention relates to a control program for such a device and a method for generating such a control program. Background technique [0002] Here, refractive laser surgery is to be understood as changing the imaging properties of the optical system "eye" by means of laser irradiation. Interaction of incident laser radiation with the eye alters the refractive properties of one or more components of the eye. Since the imaging properties of the eye are primarily determined by the cornea, in most cases refractive laser eye surgery involves treatment of the cornea. In this treatment, specific application of ablation and / or specific removal of material effect changes to the shape of the cornea; hence, the term "reshaping" is also used. [0003] A prime example of corneal remodeling in order to alter the refractive properties of the cornea ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/01A61B3/10A61B3/113A61B3/117A61F9/008
CPCA61F2009/00872A61B3/113A61F9/008A61F9/00804A61B3/117A61F2009/00851A61F2009/00846A61B3/1005A61F9/013A61B3/10
Inventor 彼得·里德尔克里斯托夫·德尼茨基
Owner ALCON INC
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