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Related Experiment Video

Updated: Oct 30, 2025

Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia
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Egocentric Distance Perception Disorder in Amblyopia.

Bo Dong1, Airui Chen1, Tianyang Zhang2

  • 1Department of Psychology, Suzhou University of Science and Technology, Suzhou, China.

Psychologica Belgica
|July 5, 2021
PubMed
Summary

Amblyopes struggle with egocentric distance perception, impacting hand-eye coordination and accurate distance judgment across personal, action, and vista spaces. Further research is needed to understand these visual processing deficits.

Keywords:
action spaceamblyopiaegocentric distance perceptionpersonal spacevista space

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Area of Science:

  • Visual Perception
  • Neuroscience
  • Ophthalmology

Background:

  • Egocentric distance perception is crucial for spatial awareness.
  • Amblyopia, a visual impairment, affects basic visual function but its impact on distance perception is unclear.
  • Existing research on amblyopes' distance perception is limited.

Purpose of the Study:

  • To review the cognitive mechanisms of egocentric distance perception.
  • To examine empirical evidence of egocentric distance perception disorders in amblyopes across different visual spaces.
  • To identify future research directions.

Main Methods:

  • Literature review of cognitive mechanisms.
  • Analysis of empirical studies on amblyopes' egocentric distance perception.
  • Discussion of findings across personal, action, and vista spaces.

Main Results:

  • Amblyopes exhibit impaired hand-eye coordination in personal space (<2m).
  • Amblyopes struggle with accurate distance judgment in action space (2m-30m).
  • Limited research exists on amblyopes' distance perception in vista space (>30m).

Conclusions:

  • Amblyopia significantly disrupts egocentric distance perception across various spatial ranges.
  • Systematic investigation is needed for all three visual spaces and moving objects.
  • Further research should compare amblyopia subtypes and explore new theoretical frameworks and VR applications.