Patent ID: 11950969
Assignee: ALCON INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  G  H | IPC A  G  H

Claim 0:
1. A tracking system for quantifying retinal traction in a patient eye during an ophthalmic procedure, the tracking system comprising:
an indicator device;
a stereo camera configured to collect and output stereo image data of a retina of the patient eye; and
an electronic control unit (ECU) in communication with the indicator device and the stereo camera, wherein the ECU is configured to:
receive the stereo image data from the stereo camera during the ophthalmic procedure, the stereo image data including stereo image pairs;
assign tracking points as coinciding pixels of the stereo image pairs;
automatically perform a digital image correlation (DIC) process to the stereo image pairs to ascertain relative motion of the tracking points;
associate relative motion of the tracking points with the retinal traction, using a traction map of the ECU, as a numeric traction quotient indicative of magnitude of the retinal traction; and
execute a control action based on the numeric traction quotient, wherein the control action is indicative of the retinal traction.