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Corneal implant and method for correction of impaired vision in the human eye

A refractive error, implant technology, applied in the direction of eye implants, etc., can solve the problems of shading and reflected optical phenomena, inappropriate application, interference, etc.

Inactive Publication Date: 2009-06-17
阿尔贝特·达克瑟尔
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the principle has the following disadvantage: Due to the newly emerging boundary surfaces, negative optical phenomena such as shading and reflections can occur, which the patient perceives as distractions
This implant is not suitable for application in the central corneal region

Method used

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  • Corneal implant and method for correction of impaired vision in the human eye
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  • Corneal implant and method for correction of impaired vision in the human eye

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Embodiment Construction

[0040] figure 1 A cross-sectional view of a human cornea 1 with a radius of curvature R and an optical center Z is shown. The corneal implant 2 according to the present invention is implanted in the corneal tissue of the cornea 1, the effective thickness d of the implant 2 measured in the direction of the optical axis 5 of the eye is greater than 50 μm, and the thickness d is greater than 50 μm in the normal direction perpendicular to the thickness direction. The width b measured on the intersection plane is less than 1 mm.

[0041] The corneal implant 2 has no imaging function for the human eye, that is, the incident light does not form an image on the retina (not shown in the figure) of the eye through the optical properties of the corneal implant 2 of the present invention. Instead, the effect of implanting the corneal implant 2 is that the concentrated volumes add up and thus form the aspheric surface curve 3 of the cornea 1 around the corneal optical center Z, which make...

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Abstract

Corneal implant for introduction into the visual centre (Z) of the cornea of the human eye for the purpose of rectifying impaired vision, in particular presbyopia, or presbyopia in combination with hypermetropia or myopia. To make available a corneal implant which is suitable for use in the visual centre (Z) of the human eye and can be used to correct presbyopia on its own or in combination with hypermetropia or myopia, it is provided that the effective thickness (d) of the corneal implant (2), measured in the direction of the optic axis (5) of the eye, is more than 50[mu]m and the maximum width (b), measured in a plane perpendicular to the direction of thickness, is less than l mm, the corneal implant (2) having no imaging function in relation to the human eye.

Description

technical field [0001] The present invention relates to corneal implants for implantation in the optical center of the cornea of ​​the human eye for the adjustment of refractive errors, particularly of the elderly with otherwise normal refractive errors (presbyopia) and in combination with hypermetropia or myopia Refractive error. [0002] The invention also relates to methods for correcting refractive errors of the human eye, in particular for the correction of senile refractive errors, combinations of senile refractive errors and hyperopia, combinations of senile refractive errors and myopia, and combinations of senile refractive errors and astigmatism A method by implanting a corneal implant in the optical center of the cornea. [0003] The optics used by the human eye to image the environment consist primarily of the cornea and the lens behind the iris. This optical configuration of the human eye has a total refractive index of about 60 Diopters, with the interface betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/14
CPCA61F2/147A61F2/14A61F2/142A61F2/1451
Inventor 阿尔贝特·达克瑟尔
Owner 阿尔贝特·达克瑟尔
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