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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 7 — Jun. 25, 2012

Optical eye tracking system for noninvasive and automatic monitoring of eye position and movements in radiotherapy treatments of ocular tumors

Aurora Fassi, Marco Riboldi, Christian Fabio Forlani, and Guido Baroni  »View Author Affiliations

Applied Optics, Vol. 51, Issue 13, pp. 2441-2450 (2012)

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A noninvasive eye tracking system based on infrared 3-D video-oculographic techniques is proposed for the automatic monitoring of eye position and orientation in external beam radiotherapy of ocular tumors. The presented method can be applied for the real-time estimation of lesion position and tumor–beam misalignments, allowing automatic patient setup and eye movement gated treatments. A prototypal eye tracker was developed and tested on five subjects, achieving gaze estimation errors of 0.5° and eye monitoring frequencies of 125 Hz. The proposed application can potentially improve quality and efficacy of ocular radiotherapy treatments, currently based on invasive, qualitative, and manual control procedures.

© 2012 Optical Society of America

OCIS Codes
(150.6910) Machine vision : Three-dimensional sensing
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(330.2210) Vision, color, and visual optics : Vision - eye movements
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(100.4999) Image processing : Pattern recognition, target tracking

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: November 28, 2011
Revised Manuscript: March 6, 2012
Manuscript Accepted: March 6, 2012
Published: May 1, 2012

Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics

Aurora Fassi, Marco Riboldi, Christian Fabio Forlani, and Guido Baroni, "Optical eye tracking system for noninvasive and automatic monitoring of eye position and movements in radiotherapy treatments of ocular tumors," Appl. Opt. 51, 2441-2450 (2012)

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