What question did this study set out to answer?

To assess stereopsis performance using random dot stereograms in individuals with strabismus, amblyopia, and ocular pathology.

March 21, 2026

Random‐Dot‐Stereogram Performance by Strabismic, Amblyopic, and Ocular‐Pathology Patients in an Operant‐Discrimination Task

Key Points

To assess stereopsis performance using random dot stereograms in individuals with strabismus, amblyopia, and ocular pathology.
Evaluated 88 optometric patients
Used an operant match-to-sample discrimination task
Administered random dot stereograms to measure stereopsis performance
All normal subjects passed the stereopsis test
Strabismic patients without amblyopia, microtropes, and amblyopic strabismics mostly failed
Only some anisometropic amblyopes and intermittent strabismics passed the test

Abstract

ABSTRACT Stereopsis performance was assessed in 88 optometric patients using an operant match‐to‐sample discrimination task involving random dot stereograms (RDSs). All normals passed the RDS test, and all constant strabismics without amblyopia, microtropes, and amblyopic strabismics failed. Only a portion of anisometropia amblyopes, intermittent strabismics, and ocular‐pathology patients passed. The findings were interpreted as indicating that stereopsis with a RDS may be better predicted and explained in terms of binocular fusion and bifoveal alignment than by visual acuity.

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