Heterophoria adaptation during the viewing of 3D stereoscopic stimuli

In this experiment two hypotheses were tested. The first hypothesis was that viewing 3D stereoscopic stimuli which are located geometrically beyond the screen on which the images are displayed would induce exophoric heterophoria (phoria) changes (adaptation). The second hypothesis was that participants whose phoria changed as a consequence of adaptation during the viewing of the stereoscopic stimuli would experience less visual discomfort than people whose phoria did not adapt.

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