Optical system for ophthalmic surgical laser

A technology of ophthalmic laser and ophthalmic surgery, applied in the field of optical system for ophthalmic surgery laser, which can solve problems such as inability to provide solutions, limited precision, etc.

Active Publication Date: 2012-07-18
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These procedures use manual devices, ultrasound, heated fluid, or lasers and tend to have significant disadvantages, including the need to enter the eye with a probe to achieve fragmentation, and the limited precision associated with such lens fragmentation techniques
Therefore, these designs do not provide a solution for the significant challenge of operating on the lens of the eye

Method used

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  • Optical system for ophthalmic surgical laser
  • Optical system for ophthalmic surgical laser
  • Optical system for ophthalmic surgical laser

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Embodiment Construction

[0044] Some embodiments of the invention include a system for performing surgery in the lens of the eye using femtosecond laser pulses. Some integrated embodiments can also perform both corneal and lens surgical procedures. Performing ophthalmic surgery in the lens of the eye is related to requirements that are qualitatively different from corneal surgery procedures.

[0045] The main differences between the currently described lens surgery laser system and the corneal system include:

[0046] 1. Femtosecond laser pulses will be reliably generated. The high repetition rate of femtosecond pulses allows the use of smaller energy per pulse, which provides greater control and accuracy for the system operator. However, it is quite a challenge to reliably generate femtosecond pulses compared to nanosecond or picosecond pulses used in some existing systems.

[0047] 2. The surgical laser beam is significantly refracted when it travels through a refracting medium including the cornea and ...

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Abstract

A laser system for ophthalmic surgery includes a laser source, to generate a pulsed laser beam, an XY scanner, to receive the pulsed laser beam, and to output an XY-scanning beam, scanned in two directions transverse to a Z axis, a Z scanner, to receive the XY-scanning beam, and to output an XYZ-scanning beam, scanned in addition along the Z axis, the Z scanner including a first lens group to output a beam having an intermediate focal plane, and a movable lens group to receive the beam through the intermediate focal plane and to collimate the beam in a variable manner, and an objective to receive the collimated beam from the Z scanner and to focus the beam into a focal spot in a target region.

Description

[0001] Cross references to related applications [0002] This application claims the benefits and priority of the utility model application "Optical System for Ophthalmic Surgical Laser" with serial number 12 / 511,974, which was filed on July 29, 2009, and the entire application is incorporated herein by reference. Technical field [0003] The present invention relates to a system for performing surgery on the anterior segment of the eye using a femtosecond laser, and more specifically, to an embodiment that minimizes optical distortion of the laser beam while scanning and focusing the laser beam into the eye. Background technique [0004] This application describes examples and embodiments of techniques and systems for performing laser surgery on the lens by photodisruption caused by laser pulses in the anterior segment of the eye. The various lens surgical procedures used to remove the lens utilize various techniques to break the lens into small pieces that can be removed from the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/008A61N5/067G02B26/08G02F1/29G02C7/02
CPCA61F2009/00851A61F2009/00889A61F2009/0087A61F9/0084A61B3/102A61F9/008A61F2009/00872
Inventor F・拉克希J・巴克
Owner ALCON INC
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