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Apparatus for laser therapy of the human eye

A laser treatment, human eye technology, used in ophthalmic treatment, laser surgery, utensils with integral electric heating devices, etc.

Active Publication Date: 2020-03-10
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The creation of OBL can make it more difficult or even impossible to accurately track the eye with the aid of an eye tracker

Method used

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  • Apparatus for laser therapy of the human eye
  • Apparatus for laser therapy of the human eye
  • Apparatus for laser therapy of the human eye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 A block designation shows an embodiment of an apparatus (generally designated 10 ) for laser treatment of the human eye 12 . In this case the device 10 comprises a control device 14 , a laser arrangement 16 and a patient adapter 17 .

[0024] The laser arrangement 16 comprises a laser source 18 which generates a laser beam 20 with a pulse duration, for example in the femtosecond range. The laser beam has an appropriate wavelength for producing a laser-induced optical breakdown in the corneal tissue of the eye 12 . The laser beam 20 may have a wavelength in the range from 300nm (nanometers) to 1900nm, eg from 300nm to 650nm, from 650nm to 1050nm, from 1050nm to 1250nm or from 1100nm to 1900nm. The laser beam 20 can also have a focal diameter of 5 μm or less.

[0025] Beam broadening optical system 22, scanner device 24, mirror 26 and focusing objective lens 28 are along the direction that laser beam 20 propagates (by figure 1 Indicated by the arrow in ) is p...

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PUM

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Abstract

The invention discloses a device for laser treatment of the human eye, comprising a pulsating laser radiation source and control means for controlling the focal point of the laser radiation in space and time to generate an incision map. The incision map defines a corneal flap, a first accessory channel, and a second accessory channel. The corneal flap is connected to adjoining corneal tissue in a hinge region and has an underside of the flap detached from the adjoining corneal tissue through an underlying incision. The first auxiliary channel extends from the hinge region to the outer surface of the eye and is adapted to remove gas produced during creation of the underlying incision. The second auxiliary channel extends along an edge of the bottom cutout, connects to the first auxiliary channel, and extends beyond the hinge region. The control device is configured to create the second secondary channel prior to the underlying incision.

Description

technical field [0001] The present disclosure generally relates to creating an incision in the cornea of ​​a human eye by means of focused pulsating laser radiation. It relates in particular to the preparation of LASIK flaps while avoiding the creation of a so-called opaque bubble layer (OBL). Background technique [0002] Typically, the so-called LASIK (Laser In Situ Keratomileusis) technique is used to correct defects in the vision of the human eye (for example nearsightedness or hyperopia or astigmatism). In this case, a small covering plate (commonly called a flap) is first detached from the adjacent corneal tissue, which remains attached to the corneal tissue in the hinge region. This enables the flap to be easily folded to expose the underlying corneal tissue region, and allows the flap to be easily folded back after ablation of the exposed tissue region by means of focused UV laser radiation. The removal of material in an ablation procedure results in an altered sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/01A61F9/009
CPCA61F9/00836A61F9/009A61F2009/00872A61F2009/00897A47J36/02A47J27/002A47J27/004A61F9/00804
Inventor P·马丁
Owner ALCON INC