Laser correction of vision conditions on the natural eye lens

A lens and ophthalmic laser technology, applied in the field of laser systems, can solve problems involving complications, unpredictability of results, etc., and achieve the effect of avoiding possible complications, avoiding material removal, and less inconvenience

Active Publication Date: 2011-02-16
ROWIAK GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Unfortunately, in too many cases, the known methods of refractive surgery still suffer from the unpredictabi

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  • Laser correction of vision conditions on the natural eye lens
  • Laser correction of vision conditions on the natural eye lens
  • Laser correction of vision conditions on the natural eye lens

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Embodiment Construction

[0050] figure 1 An embodiment of a laser system 1 according to the invention is shown schematically. In particular, the laser system 1 is an ophthalmic laser system, ie a laser system 1 suitable for eye surgery. The laser system 1 comprises a laser 2 which outputs laser radiation in the form of ultrashort laser pulses 3 . In a preferred embodiment, the laser 2 is a femtosecond laser 2 with a pulse duration in the range of a few femtoseconds (fs) to hundreds of fs. For minimized maintenance requirements, fiber oscillators, eg with or without subsequent pulse amplification, are preferred. Typical values ​​for the laser pulse 3 are a pulse duration of 100 fs, a pulse energy of 1 μJ, a wavelength of 700 nm to 1100 nm, and a repetition rate of 100 kHz.

[0051] Focusing optics 4 , such as a single lens or lens system, focus the laser pulse 3 to a focal point 5 , the numerical aperture of which focusing optics 4 is in the range of 0.1 to 1.4. The focal length of the focusing opt...

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Abstract

The invention relates to an ophthalmologic laser system (1) comprising an ultra-short pulse laser (2) for outputting ultra-short laser pulses (3), focusing optics (4) for producing at least one focal point (5) on and/or in the eye lens (6) of the patient's eye (7), a deflection mechanism (9) for varying the position of the focal point (5) on and/or in the eye lens (6), and comprising a control mechanism (11) for controlling the deflection mechanism (9). The laser system (1) is characterized in that the laser pulses output by the ultra-short pulse laser (2) and the size of the focal point (5) fixed by the focusing optics (4) are configured such that a fluence can be applied under or on the disruption threshold of the material of the eye lens (6) at the focal point (5), wherein said fluence is at the same time sufficiently high to cause changes in at least one material property of the material of the eye lens (6). The laser system (1) is also characterized in that the deflection unit (9) can be actuated by means of the control mechanism (11) in such a way that the focal points (5) of a group of laser pulses (3) are arranged such that a diffractive optical structure (20) can be produced by the changes in the material property in the eye lens (6) caused by way of application of the laser pulses. The invention also relates to a method for generating control data for actuating a deflection unit (9) of such a laser system (1).

Description

technical field [0001] The present invention relates to a new laser system and method for correcting vision conditions such as hyperopia, nearsightedness, astigmatism or presbyopia. Laser systems and methods according to the present invention are intended to perform correction of vision conditions by treating or manipulating a patient's natural eyelens. Background technique [0002] Ultrashort laser pulses with a duration in the range of femtoseconds (fs) to picoseconds (ps) are known to produce breaks in or on transparent media by means of so-called optical breakthrough . This fracture results in removal or detachment of material. The interaction process is based on multiphoton absorption and has been described in several publications (for example, Alfred Vogel and Vasan Venugopalan: "Mechanisms of Pulsed Laser Ablation of Biological Tissues"; Chem. Rev. 2003, 103, 577-644; or US Patent US 5,656,186A or US 5,984,916A) are described. It is characterized in that: on the o...

Claims

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Application Information

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IPC IPC(8): A61F9/008B23K26/06A61F9/011
CPCA61F2009/00897B23K26/403A61F9/00838A61F2009/0087A61F9/00827A61F2009/00842B23K26/0635B23K26/06B23K26/0639B23K26/0665B23K26/0648A61F2009/00895A61F9/008B23K26/0624B23K26/064B23K2103/30B23K2103/50
Inventor 霍尔格·卢巴乔夫斯基尢维·奥伯海德阿尔弗雷德·维戈纳西尔维亚·舒马赫
Owner ROWIAK GMBH
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