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Related Experiment Video

Updated: May 25, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

Fixation patterns in maculopathy: from binocular to monocular viewing.

Luminita Tarita-Nistor1, Michael H Brent, Martin J Steinbach

  • 1Vision Science Research Program, Toronto Western Hospital, Toronto, Ontario, Canada.

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|January 24, 2012
PubMed
Summary

Patients with age-related macular degeneration (AMD) show good binocular coordination during fixation. However, switching to monocular viewing can disrupt eye control in some AMD patients, particularly affecting the worse eye.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Vision Science

Background:

  • Age-related macular degeneration (AMD) is a leading cause of vision loss.
  • Understanding binocular coordination is crucial for visual function in AMD patients.

Purpose of the Study:

  • To assess binocular coordination during fixation in individuals with AMD.
  • To determine if eye position shifts occur when transitioning from binocular to monocular viewing in AMD patients.

Main Methods:

  • Eye movements of 12 AMD patients and 16 controls were recorded using an EyeLink eye-tracker.
  • Participants fixated on a target under binocular and monocular (each eye individually) conditions.
  • Shifts in eye position at fixation points were calculated for each eye.

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Last Updated: May 25, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

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Published on: July 21, 2020

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
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A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

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16:49

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Published on: December 4, 2011

Main Results:

  • Most AMD patients exhibited good binocular coordination during binocular viewing.
  • 25% of AMD patients showed atypical eye position shifts when switching to monocular viewing.
  • These shifts were linked to loss of fixational control or slow drifts associated with phoria in the fellow eye.

Conclusions:

  • Individuals with AMD generally maintain effective binocular ocular motor control during fixation.
  • Monocular viewing conditions can reveal subtle deficits in ocular motor control for some AMD patients, especially affecting the poorer-seeing eye.