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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Related Experiment Video

Updated: May 12, 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

Eye motion increases temporal visual field extent.

Eric Denion1, Audrey-E Dugué, Sophie Coffin-Pichonnet

  • 1Department of Ophthalmology, CHU de Caen, Caen, FranceDepartment of Biostatistics and Clinical Research, CHU de Caen, Caen, FranceMedical School, Université de Caen Basse-Normandie, Caen, France.

Acta Ophthalmologica
|April 17, 2013
PubMed
Summary

Eye motion significantly expands the temporal visual field by 37%, enhancing overall visual field extent. This adaptation may reduce the need for head movements during daily activities.

Keywords:
Hertel exophthalmometrybinocular visual fielddrivingeye motioneye movementgoldmann perimeterquantificationvisual field

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Area of Science:

  • Ophthalmology
  • Human Physiology
  • Perception

Background:

  • The extent of the human visual field is crucial for spatial awareness and navigation.
  • Understanding factors influencing visual field extent, such as eye movement, is important for visual science.

Purpose of the Study:

  • To investigate the impact of eye motion on the overall visual field extent.
  • To quantify the expansion of the visual field with eye movement, particularly in the temporal quadrant.

Main Methods:

  • Visual fields were assessed in 15 healthy volunteers using the Goldmann perimeter with a V4 test object.
  • Measurements were taken with the eye in primary gaze and with permitted eye motion.
  • Head rotation and exophthalmometry were used to further analyze temporal visual field extent and globe position influence.

Main Results:

  • Binocular visual field surface area increased by 37% with eye motion (p<0.001).
  • The temporal quadrant showed the largest increase (46%, p<0.001), with temporal eccentricity reaching over 135° in some subjects.
  • Hertel exophthalmometry correlated positively with temporal visual field surface area during eye motion (p=0.013).

Conclusions:

  • Eye motion substantially expands the temporal visual field, offering a wider field of view.
  • This expansion is a potential adaptation for terrestrial, bipedal locomotion, possibly minimizing head movements.
  • The findings highlight the dynamic nature of the visual field and its interaction with eye and head movements.