3D Ocular Ultrasound Using Gaze Tracking on the Contralateral Eye: A Feasibility Study

  • Narges Afsham
  • Mohammad Najafi
  • Purang Abolmaesumi
  • Robert Rohling
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6891)


A gaze-deviated examination of the eye with a 2D ultrasound transducer is a common and informative ophthalmic test; however, the complex task of the pose estimation of the ultrasound images relative to the eye affects 3D interpretation. To tackle this challenge, a novel system for 3D image reconstruction based on gaze tracking of the contralateral eye has been proposed. The gaze fixates on several target points and, for each fixation, the pose of the examined eye is inferred from the gaze tracking. A single camera system has been developed for pose estimation combined with subject-specific parameter identification. The ultrasound images are then transformed to the coordinate system of the examined eye to create a 3D volume. Accuracy of the proposed gaze tracking system and the pose estimation of the eye have been validated in a set of experiments. Overall system error, including pose estimation and calibration, are 3.12 mm and 4.68°.


Retinal Detachment Target Point Posterior Segment Ultrasound Transducer Cornea Center 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Narges Afsham
    • 1
  • Mohammad Najafi
    • 1
  • Purang Abolmaesumi
    • 1
  • Robert Rohling
    • 1
  1. 1.University of British ColumbiaVancouverCanada

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