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

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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 anisometropic 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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