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Updated: Jun 26, 2026
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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
Published on: July 21, 2020
Perimetry while moving the eyes: implications for the variability of visual field defects
Armin Toepfer1, Erich Kasten, Tobias Guenther
1Institute of Medical Psychology, Otto von Guericke University Magdeburg, Magdeburg, Germany.
Summary
Assessing visual fields during eye movement yields results comparable to standard perimetry. This finding supports evaluating visual field testing under conditions that mimic daily vision, which involves natural eye movements.
Area of Science:
- Ophthalmology
- Neuroscience
- Visual Science
Background:
- Standard perimetry minimizes saccades for increased testing precision.
- Daily vision necessitates eye movements, making assessment during motion relevant.
Purpose of the Study:
- To evaluate visual field testing during natural eye movements.
- To compare perimetric performance with stable versus moving fixation.
Main Methods:
- Perimetry was conducted on 8 healthy subjects and 16 patients with visual field defects.
- Eye movements were tracked using an eye tracker during stable and moving fixation conditions.
- Key outcomes included stimulus detection, visual field border variability, and saccade amplitudes.
Main Results:
- Perimetric performance was comparable between stable and moving fixation conditions.
- Subjects maintained high accuracy (92%-96%) in fixation control detection.
- Eye-tracking confirmed precise fixation, with eyes within +/-1 degree of the target 97% of the time.
Conclusions:
- Visual field assessment during eye movement is comparable to standard perimetry.
- This suggests perimetry can be effectively performed with a moving fixation spot, mimicking real-world vision.
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