Virtual microscope system for monitoring the progress of corneal ablative surgery and associated methods

• US 7,784,946 B2
• Filed: 12/18/2008
• Issued: 08/31/2010
• Est. Priority Date: 12/21/2007
• Status: Active Grant

• Current Assignee: Alcon Incorporated
• Original Assignee: Alcon RefractiveHorizons, LLC (Novartis Ag)
• Inventors: LeBlanc, Richard Alan
• Primary Examiner(s): MAI, HUY KIM
• Application Number:
  US12/337,705
• Publication Number:
  US 20100157244A1
• Time in Patent Office: 621 Days
• Field of Search: 351/205, 351/206, 351/210, 351/212, 351/221, 351/246, 351/247
• US Class Current: 351/210
• CPC Class Codes: A61B 3/132 in binocular arrangement
• CPC Class Codes: A61F 2009/00844 Feedback systems
• CPC Class Codes: A61F 2009/00872 Cornea
• CPC Class Codes: A61F 9/008 using laser

Abstract

A system for visualizing an eye of a patient during corneal surgery includes a processor and a first and second camera in signal communication with the processor. The cameras are positionable for focusing on a cornea positioned for surgery. A first and a second display and optics therefor are in signal communication with the processor and are positionable for viewing through a first and a second eyepiece of a stereo microscope, respectively. Software is resident on the processor for receiving a first and second corneal image from the first and second cameras, for processing the received first and second images for display, and for transmitting the processed first and second images to the first and the second displays, respectively, via the display optics. The displays can then be viewed by a surgeon through the microscope at least during the surgery.

Claims

1. A system for monitoring a process of corneal surgery comprising:

a processor;

a first and a second camera in signal communication with the processor and positionable for focusing on a cornea of an eye positioned for undergoing surgery;

a first and a second display, and optics therefore, in signal communication with the processor and positionable for viewing through a first and a second eyepiece of a stereo microscope, respectively, the microscope associated with a surgical field of the cornea;

a source of illumination directable toward the cornea and comprising a wavelength selected for enhancing an image of a portion of the eye; and

software resident on the processor comprising code segments for;

receiving a first and a second image of the cornea from the first and the second cameras;

processing the received first and second images for display; and

transmitting the processed first and second image to the first and the second displays, respectively, for viewing via the display optics by a surgeon through the microscope at least during the surgery, wherein the first and the second camera each comprise a color camera.

2. The system recited in claim 1, further comprising a spectral filter positionable in front of the camera for transmitting illumination reflected from the eye of a desired frequency range.

3. The system recited in claim 1, wherein the illumination source comprises at least one of a source of near-infrared light and a source of ultraviolet light.

4. The system recited in claim 1, wherein the display optics include means for zooming the display.

5. The system recited in claim 1, wherein the first and the second camera and the first and the second display each have a resolution at least as great as a resolution of a human retina.

6. The system recited in claim 1, wherein the display optics comprise means for adjusting at least one of parallax and focus for each of the first and the second displays.

7. A method for monitoring a process of corneal surgery comprising the steps of:

illuminating an eye comprising a cornea positioned for undergoing surgery;

stereoscopically imaging the cornea onto a first and a second display; and

viewing the first and the second display through a first and a second eyepiece of a stereo microscope, respectively, wherein;

the imaging step is performed with the use of a first and a second color camera; and

the illuminating step comprises illuminating the eye with a wavelength selected for enhancing an image of a portion of the eye.

8. The method recited in claim 7, further comprising spectrally filtering illumination reflected from the eye of a desired frequency range upstream of the first and the second camera.

9. The method recited in claim 7, wherein the selected wavelength comprises at least one of near-infrared light and ultraviolet light.

10. The method recited in claim 7, further comprising the step of zooming the display to a desired magnification.

11. The method recited in claim 7, further comprising the step of adjusting at least one of parallax and focus for each of the first and the second displays.