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Ocular dominancy in conjugate eye movements at reading distance

Authors
Journal
Neuroscience Research
0168-0102
Publisher
Elsevier
Publication Date
Volume
52
Issue
3
Identifiers
DOI: 10.1016/j.neures.2005.03.013
Keywords
  • Ocular Dominancy
  • Conjugate Eye Movement
  • Reading Distance
  • Saccade
  • Smooth Pursuit

Abstract

Abstract We recorded conjugate eye movements to elucidate whether ocular dominancy was present at reading distance in 21 normal volunteers with the right-handedness by using a video-oculographic (VOG) measurement. This included the velocity of smooth pursuits, and the latency and velocity of saccades. We defined the dominant eye for each subject by means of the near–far alignment test and 20 subjects showed the right dominant eyes. Although the ocular dominancy was not found in the velocity of smooth pursuit and vertical saccades, the velocity of horizontal saccades in the dominant eyes was faster than that in the non-dominant eyes. These results suggest that the dominant eye is functionally activated prior to non-dominant eye in horizontal saccades at reading distance, which thus indicates the functional dominancy of the dominant eye in conjugate eye movements.

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