Ophthmalogic surgical system

An ophthalmologic surgical system operatively coupled to a surgical microscope for use in a guided surgical procedure on an eye of a patient, comprising:

• a surgical guidance subsystem comprising a processor programed to provide operations including:
• registering a real-time video image of the patient's eye as displayed to the surgeon via the surgical microscope to an image of the eye of the patient;
• providing surgical guidance imaging in a visual overlay throughout the surgical procedure in accord with a surgical plan;
• continually tracking of a plurality of identified landmarks on the eye of the patient after eye registration to ensure accurate registration of the provided surgical guidance imaging relative to the eye of the patient irrespective to movement of the patient's eye throughout the surgical procedure;
• comparing landmarks in a respective first image frame taken from the video stream generated by the surgical microscope to the landmarks in a respective downstream second image frame taken from the video stream generated by the surgical microscope, which is taken at a select time interval after the first image frame;
• determining an error threshold between the tracked landmarks and the landmarks in an anchor video frame that was used when registering the real-time video image of the patient's eye, wherein the error threshold is exceeded when the error between the tracked landmarks and the anchor landmarks is determined to be larger than a target threshold;
• and
• terminating surgical guidance imaging in the visual overlay until the error threshold is less than the target threshold.

An ophthalmologic surgical system operatively coupled to a surgical microscope for use in a guided surgical procedure on an eye of a patient, comprising:

• a surgical guidance subsystem comprising a processor programed to provide operations including:
• registering a real-time video image of the patient's eye as displayed to the surgeon via the surgical microscope to an image of the eye of the patient;
• providing a surgical guidance imaging in a visual overlay throughout the surgical procedure in accord with a surgical plan;
• continually tracking of a plurality of identified landmarks on the eye of the patient after eye registration to ensure accurate registration of the provided surgical guidance imaging relative to the eye of the patient irrespective to movement of the patient's eye throughout the surgical procedure;
• comparing landmarks in a respective first image frame taken from the video stream generated by the surgical microscope to the landmarks in a respective downstream second image frame taken from the video stream generated by the surgical microscope, which is taken at a select time interval after the first image frame;
• determining an error threshold between the tracked landmarks and the landmarks in an anchor video frame that was used when registering the real-time video image of the patient's eye;
• and
• terminating the surgical guidance imaging in the visual overlay until the error threshold is less than the target threshold.