Recovering stereo vision by squashing virtual bugs in a virtual reality environment.

Area of Science:

• Neuroscience
• Vision Science
• Perceptual Psychology

Background:

• Stereopsis, or 3D vision, relies on binocular disparity.
• Many individuals are stereo-deficient due to conditions like strabismus or amblyopia.
• Stereo-deficient individuals often depend on monocular cues for depth perception.

Purpose of the Study:

• To investigate if adults with stereo deficiency can improve their stereoscopic abilities.
• To determine the impact of a visuomotor training task on cue weighting in stereo-deficient individuals.
• To assess the recovery of stereoscopic information processing after targeted training.

Main Methods:

• Adults with stereo deficiency (strabismus/amblyopia) trained in a virtual reality 'bug squashing' game.
• The game involved a dichoptic virtual bug on a slanted surface, requiring physical interaction.
• Monocular and stereoscopic cues were manipulated (consistent or conflicting) to track cue weighting changes.

Main Results:

• Most participants demonstrated increased reliance on stereoscopic cues post-training.
• Training led to reduced visual suppression and improved stereoacuity.
• Changes in relative stereo cue weighting significantly predicted stereoacuity improvements.

Conclusions:

• Adults with a history of stereo deficiency can regain access to stereoscopic information.
• Targeted visuomotor experience can enhance stereoscopic cue utilization and perception.
• This suggests a potential for recovery of binocular vision even after deprivation.