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System and device for compensating a local deformation of the cornea of an eye

A local deformation, cornea technology, applied in the direction of eye implants, etc., can solve problems such as corneal tension, and achieve the effect of satisfactory implementation and strong components

Inactive Publication Date: 2008-05-14
ACRI TEC GMBH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Furthermore, this surgical method is disadvantageous in that it can cause more or less significant strains in the treated cornea due to the fixedly sized incision width without any variability in producing the channel of the implant.
Consequently, the known methods are often not able to compensate the local deformation of the cornea and the complex stress conditions that arise especially in the deformation region in a sufficiently precise manner, so that it is also not possible to eliminate the deformation in an optimal manner.

Method used

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  • System and device for compensating a local deformation of the cornea of an eye
  • System and device for compensating a local deformation of the cornea of an eye
  • System and device for compensating a local deformation of the cornea of an eye

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Embodiment Construction

[0062] FIG. 1 shows a cross-sectional view of a part of the cornea 1 of a human eye. The cornea has a distal surface 1a and a proximal surface 1b facing the retina of the eye. In the cornea 1, a local deformation 2 results in a circularly defined arched shape. Two channel-shaped receiving spaces 3 , 4 are produced in the undeformed healthy region of the cornea 1 by means of a femtosecond laser.

[0063] The receptacles 3 , 4 have a rectangular cross section and are arc-shaped in their longitudinal extension. They each enclose an angular range of less than 180°. The center of curvature of the receiving spaces 3 , 4 lies here approximately on a not shown axis extending through the center of the deformation 2 . The receiving space 3 is formed in a distal plane of the cornea 1 and the receiving space 4 is formed in a proximal plane of the cornea 1 .

[0064] In order to compensate for the deformation 2 of the cornea 1 , implant elements 5 , 6 each made of PMMA are inserted int...

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Abstract

The invention relates to a device for compensating a local deformation (2, 17) of the cornea (1,16,32,33) of an eye provided with a set (20, 21) comprising at least two implant joints (5,6,10,22,23,24,25) used in at least one reception area (3,4,11,18,19) which is inserted into the cornea (1,16,32,33), wherein at least two implant joints (5,6,10,22,23,24,25) are arranged in different superposed planes. The inventive device makes it possible to detect the eye post-operation side effects, when the simulation and selection of appropriate reception areas and devices are carried out in order to minimise said post-operation side effects and to simultaneously obtain an optimal compensation of the deformation for balancing it.

Description

technical field [0001] The present invention relates to a device and apparatus for equalizing local deformations of the cornea of ​​the eye. Background technique [0002] Such a device and such a device are used to equalize local deformations of the cornea of ​​an eye, in particular of a human eye. But it can also be used to treat the eyes of other creatures. [0003] The cornea of ​​the human eye can be thinned due to disease and / or injury, which leads to a spherically formed corneal contour in the healthy state under the influence of the aqueous humor pressure with partial outward or inward arching. This results in a refractive change including a partially pronounced curvature of the cornea (astigmatism) which cannot be balanced in a satisfactory manner by either spectacles or contact lenses. The consequence is significant vision limitation. Such corneal deformations are known as keratoconus or corneal protrusion. [0004] The removal of corneal protrusion or corneal p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/14
CPCA61F2/147A61F2/14
Inventor M·托玛拉G·托玛拉
Owner ACRI TEC GMBH
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