Egocentric Distance Perception Disorder in Amblyopia

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.