May 2007
Volume 48, Issue 13
ARVO Annual Meeting Abstract  |   May 2007
Monocular versus Binocular Control of Disparity Vergence Eye Movements
Author Affiliations & Notes
  • J. L. Semmlow
    Biomedical Engineering, Rutgers Univ. and R W Johnson Med. Sch., Piscataway, New Jersey
  • Y.-Y. Lee
    Biomedical Engineering, Rutgers Univ, NJIT, and Natl Cheng Kung Univ, Piscataway, Newark, and Tinan, Taiwan
  • T. Alvarez
    Biomedical Engineering, New Jersey Institute of Technology, Newark, New Jersey
  • Bé. Donetti
    Physiological Optics, Essilor International, St. Maur, France
  • C. Pedrono
    Physiological Optics, Essilor International, St. Maur, France
  • Footnotes
    Commercial Relationships J.L. Semmlow, None; Y. Lee, None; T. Alvarez, None; B. Donetti, Essilor International, E; C. Pedrono, Essilor International, E.
  • Footnotes
    Support Essilor International, St Maur, France
Investigative Ophthalmology & Visual Science May 2007, Vol.48, 885. doi:
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    • Get Citation

      J. L. Semmlow, Y.-Y. Lee, T. Alvarez, Bé. Donetti, C. Pedrono; Monocular versus Binocular Control of Disparity Vergence Eye Movements. Invest. Ophthalmol. Vis. Sci. 2007;48(13):885.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose:: Independent component analysis (ICA) has been used to decompose ensembles of vergence eye movements into their underlying control components. Here we apply this approach to movements of the left and right eyes to determine if these control components are monocular or binocular in nature.

Methods:: Using a commercial eye movement monitor (Skalor), left and right eye movements were recorded in response to a step change in disparity stimulation. Since the majority of vergence eye movements contain saccades, it was necessary to develop an algorithm to remove saccades from individual left and right vergence eye movements

Results:: Applying ICA decomposition to saccade-free left and right vergence eye movements led to successful identification of the control components that drive each eye. Results showed that the transient components could be quite different in the two eyes while the sustained components were generally similar.

Conclusions:: Results indicate that a monocular open-loop transient component is separately generated for each eye while the feedback-controlled sustained component was developed binocularly. Ongoing studies will investigate the role of accommodative vergence in driving it the two eyes during a normal vergence response to a binocular stimulus.

Keywords: eye movements • vergence • ocular motor control 

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