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Biconic ablation with controlled spherical aberration

A spherical aberration, corneal surface technology, applied in the field of laser vision correction, can solve the problems of halo, spherical aberration, glare and so on

Inactive Publication Date: 2006-03-01
医疗技术开发技术创新有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, laser vision correction treatment will usually result in residual spherical aberration
Residual spherical aberration may be caused by an OZ that is smaller than the patient's dilated pupil, causing glare and halo effects in low light conditions, or residual spherical aberration may be caused by the spherical postoperative corneal surface

Method used

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  • Biconic ablation with controlled spherical aberration
  • Biconic ablation with controlled spherical aberration
  • Biconic ablation with controlled spherical aberration

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Embodiment Construction

[0031] Embodiments of the present invention are directed to an algorithm for laser vision correction; a computer or device-readable medium storing the algorithm or executable instructions for directing the laser vision correction platform to execute the algorithm; and directed to using a support device for laser vision correction corrective method. Various embodiments will now be described with reference to the drawings, wherein like reference numerals are used to indicate like elements throughout.

[0032] As may be used in this application, the term "computer component" refers to a computer-related entity, hardware, firmware, software, a combination thereof, or software in execution. For example, a computer component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and a computer. For example, both an application program running on a server and the server may be computer component...

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Abstract

A laser vision correction ablation algorithm relies upon the central radius of curvature and a biconic shape factor of a pre-operative and a post-operative anterior corneal surface. The post-operative shape factor is selected to provide a spherical aberration value that is optimized for a particular patient or for a particular patient population group. The algorithm is embodied as a readable, executable instruction in a device readable medium. The algorithm further sets forth a method for laser vision correction.

Description

technical field [0001] The inventive concepts relate generally to the field of laser vision correction, and more particularly to devices, algorithms and methods that provide control over spherical aberration associated with laser vision correction procedures. Background technique [0002] The field of laser vision correction currently offers several types of treatment procedures to correct and improve refractive defects by laser photoablation of the corneal surface. These procedures include PRK, LASIK and LASEK, which are generally used to correct myopic and hyperopic deficits with or without astigmatism, and in some cases provide customized treatment to address at least some of the eye's higher order aberrations. [0003] A well-known technology used to provide traditional myopia LASIK treatment is Technolas217A  Planoscan provided by Laser Systems (Bausch & Lomb, Rochester, NY)  cutting algorithm. In this system, a selected scan pattern of a 2 mm diameter laser beam i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/01A61B3/107A61B18/20
CPCA61F2009/00882A61F2009/00857A61F2009/00859A61F9/00806A61F9/00817A61F2009/0088A61F9/008A61F2009/00872A61B18/20
Inventor 格哈德·优素埃菲弗里德里希·莫里茨
Owner 医疗技术开发技术创新有限公司