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document
[ Potentials of monocular augmented reality technology in automobile production ] . INTRODUCTION Augmented reality ( AR ) technologies can enrich the real environment with visual data , which has potential benefits for optimising the operator 's working process . It offers the possibility to provide context-sensitive information independently of the user 's location and position . Data are presented to the dominant eye on a semi-transparent mirror using a head-mounted display ( HMD ) unit that works with retinal laser technology . In this study the potential benefits and drawbacks of this new AR technology were evaluated . MATERIALS AND METHODS 45 participants without any visual impairment were randomly assigned to 3 groups and completed a variety of tasks during a simulated working day . Group 1 received conventional working aids ( paper-based documents ) to support the task processing . Group 2 additionally wore an HMD unit that was switched off . Group 3 wore a functioning HMD without any additional aids . Evaluation was carried out by means of a standardised questionnaire ( BMS ) and a concentration test ( " d2 Aufmerksamkeits-Belastungs-Test " ) . RESULTS No significant differences between the 3 groups were found in terms of mental strain , concentration-test performance and physical or mental complaints reported in a follow-up interview . Around 20 % of the subjects noticed a higher pressure and blurred vision in both eyes as well as headaches . Half of the participants complained about deficiencies concerning the ergonomic hardware design of the AR system . DISCUSSION Changes in objective ophthalmological investigation parameters were not observed . Subjects reported reduced acceptance of the HMD based on non-ophthalmological reasons , for example , the weight of the unit or the length of the cable . However , for some specific working tasks , advantages in process optimisation and operator support were observed .
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Intervention_Other
monocular augmented reality technology
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Intervention_Educational
Augmented reality ( AR ) technologies
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Intervention_Other
AR technology
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Intervention_Educational
conventional working aids ( paper-based documents ) to support the task processing
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Intervention_Other
HMD unit that was switched off .
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Intervention_Educational
HMD without any additional aids .
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Outcome_Mental
mental strain
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Outcome_Mental
concentration-test performance
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Outcome_Physical
physical or mental complaints
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Outcome_Physical
higher pressure
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Outcome_Physical
blurred vision in both eyes
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Outcome_Physical
headaches
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Outcome_Physical
ergonomic hardware design
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Participant_Sample-size
45
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Participant_Condition
visual impairment