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Patient interface for ophthalmologic diagnostic and interventional procedures

  • US 9,237,967 B2
  • Filed: 10/21/2011
  • Issued: 01/19/2016
  • Est. Priority Date: 10/21/2011
  • Status: Active Grant
First Claim
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1. A system for ophthalmic intervention on an eye of a patient having temporary geometric markers thereon indicative of the orientation of an astigmatic axis of the patient'"'"'s eye, comprising:

  • a. an imaging device having a field of view oriented toward the eye of the patient;

    b. a patient interface housing having proximal and distal ends and defining a passage therethrough, wherein the distal end is coupled to one or more seals around a periphery of the passage configured to be directly engaged with an exterior surface of the eye of the patient and having a size sufficient render visible the temporary geometric markers on the eye in that the temporary geometric markers are within the field of view of the imaging device, and wherein the proximal end is configured to be coupled to the patient workstation such that at least a portion of the field of view of the imaging device passes through the passage;

    c. two discrete, diametrically-opposed registration fiducials formed on an inner annulus of the patient interface housing within the field of view of the imaging device such that they may be imaged by the imaging device in reference to the temporary geometric markers on the eye of the patient;

    d. a third registration fiducial formed on the inner annulus of the patient interface housing within the field of view of the imaging device such that it may be imaged by the imaging device, the third registration fiducial being angularly spaced from the two discrete, diametrically-opposed registration fiducials; and

    e. control electronics operatively coupled with the image device and configured to process image data generated via the image device for the registration fiducials and the temporary geometric markers on the eye of the patient so as to determine an angular orientation of the eye relative to the patient interface housing, the control electronics further being configured to determine an up or down orientation of the patient interface housing relative to the eye based on the location of the third registration fiducial.

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