Abstract
Examined is whether or not the background features of the typical Pacific University examination room affect the patient's visual behavior as shown in lateral phoria and duction tests performed at six meters. Far phoria and duction measurements were taken on 36 subjects under the following three conditions: 1) Cluttered Field - the unstructured normal exam room background; 2) Empty Field - a large, featureless screen obscuring that background; 3) Cluttered Field with Instructions - with instructions for the subject to be aware of the normal exam room background. Significant changes in phorias and ductions were found when the subjects were instructed to be aware of the several objects in the field.
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