Methods and systems for corneal topography, blink detection and laser eye surgery
First Claim
1. A method of blink detection in a laser eye surgical system, comprising:
- providing a topography measurement structure having at least one geometric marker;
placing the topography measurement structure into a position proximal to an eye of a patient such that light traveling from the at least one geometric marker is capable of reflecting off a refractive structure of the eye of the patient;
detecting, with an image capture device, the light reflected from the eye of the patient for a predetermined time period while the topography measurement structure is at the proximal position;
converting the light reflected from the surface of the eye in the predetermined time period into image data; and
analyzing the image data to determine whether light corresponding to the geometric marker is detected in the reflected light, wherein if the geometric marker is determined not to be present, the patient is identified as having blinked during the predetermined time.
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Abstract
A method of blink detection in a laser eye surgical system includes providing a topography measurement structure having a geometric marker. The method includes bringing the topography measurement structure into a position proximal to an eye such that light traveling from the geometric marker is capable of reflecting off a refractive structure of the eye of the patient, and also detecting the light reflected from the structure of the eye for a predetermined time period while the topography measurement structure is at the proximal position. The method further includes converting the light reflected from the surface of the eye into image data and analyzing the image data to determine whether light reflected from the geometric marker is present is in the reflected light, wherein if the geometric marker is determined not to be present, the patient is identified as having blinked during the predetermined time.
43 Citations
23 Claims
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1. A method of blink detection in a laser eye surgical system, comprising:
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providing a topography measurement structure having at least one geometric marker; placing the topography measurement structure into a position proximal to an eye of a patient such that light traveling from the at least one geometric marker is capable of reflecting off a refractive structure of the eye of the patient; detecting, with an image capture device, the light reflected from the eye of the patient for a predetermined time period while the topography measurement structure is at the proximal position; converting the light reflected from the surface of the eye in the predetermined time period into image data; and analyzing the image data to determine whether light corresponding to the geometric marker is detected in the reflected light, wherein if the geometric marker is determined not to be present, the patient is identified as having blinked during the predetermined time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of improved imaging and ranging in a laser eye surgical system, comprising:
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providing a topography measurement structure having at least one geometric marker into a position proximal to an eye of a patient such that light traveling from the at least one geometric marker is capable of reflecting off a refractive surface of the eye of the patient; generating structural or position data regarding an eye of a patient; during at least a portion of the generating step and while the topography measurement structure is at the proximal position, periodically detecting with an image capture device, the light reflected from the refractive structure of the eye of the patient for a predetermined period of time; converting the light reflected from the surface of the eye for at least one predetermined time period into image data; and analyzing the image data to determine whether the light corresponding to the geometric marker was present in the reflected light, wherein if the geometric marker is determined not to be present, the patient is identified as having blinked during the predetermined time. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for detecting the blink of an eye in a patient, the apparatus comprising:
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a topography measurement system having at least one geometric marker, the topography measurement system for measuring a topography of the cornea of the eye; an image capture device configured to capture an image of the light reflected from a refractive structure of the eye of the patient for a predetermined period of time; and a processor comprising a tangible medium configured to analyze the captured image to determine whether light corresponding to the geometric marker is present in the captured image, wherein if light corresponding to the geometric marker is not present in the captured image, the processor reports that the eye blinked during the predetermined time period.
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Specification