LAUSR

The present study investigated the effect of the physical load of augmented reality (AR) glasses on subjective assessments for an extended duration of a video viewing task. Ninety-six subjects were recruited for this test and were divided by spectacle use, sex, age and body mass index (BMI). Four glasses frame weights were assessed. To investigate their effectiveness, a novel prototype adopting three design interventions, (1) adjustable frame width, (2) ergonomic temples and (3) fixed center of gravity, was designed with regard to subjective discomfort ratings (nose, ear and overall). Subjective discomfort in all regions was significantly increased with increasing physical load on the nose. In addition, nonspectacle users, women, older users and participants in middle BMI category reported higher discomfort than other groups. This finding could have important implications for the ergonomic design of AR glasses and could help to identify design considerations relevant to the emerging wearable display industry.