Optometric Measurements Predict Performance but not Comfort on a Virtual Object Placement Task with a Stereoscopic 3D Display
Technical paper, 1 May 2013-12 Feb 2014
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN PERFORMANCE WING (711TH) WARFIGHTER INTERFACE DIVISION/BATTLESPACE VISUALIZATION BRANCH
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Twelve participants were tested on a simple virtual object precision placement task while viewing a stereoscopic 3D S3D display. Inclusion criteria included uncorrected or best corrected vision of 2020 or better in each eye and stereopsis of at least 40 arc sec using the Titmus stereo test. Additionally, binocular function was assessed, including measurements of distant and near phoria horizontal and vertical and distant and near horizontal fusion ranges using standard optometric clinical techniques. Before each of six 30 minute experimental sessions, measurements of phoria and fusion ranges were repeated using a Keystone View Telebinocular and an S3D display, respectively. All participants completed experimental sessions in which the task required the precision placement of a virtual object in depth at the same location as a target object. Subjective discomfort was assessed using the Simulator Sickness Questionnaire SSQ. Individual placement accuracy in S3D trials was significantly correlated with several of the binocular screening outcomes viewers with larger convergent fusion ranges measured at near distance, larger total fusion ranges convergent plus divergent ranges, measured at near distance, andor lower better stereoscopic acuity thresholds were more accurate on the placement task. No screening measures were predictive of subjective discomfort, perhaps due to the low levels of discomfort induced.
- Anatomy and Physiology
- Electrooptical and Optoelectronic Devices