Abstract
Complaints of visual fatigue have increased with recent advances in 3D technology. This is usually explained by mismatches between accommodation and convergence during stereoscopic vision. This chapter discusses visual function in terms of fixation distances between lens accommodation and convergence in young participants viewing a real object and 3D video clips, measured using an original instrument. A liquid crystal shutter glass system was used to present the 3D video clips to participants. This method was considered to be appropriate for the measurement of stereoscopic vision based on results showing that the diopter values of participants’ accommodation and convergence were similar, and that they changed periodically, when viewing real objects. Lens accommodation and convergence when participants viewed 3D video clips were also examined. The results showed that both accommodation and convergence moved together with the virtual position of the 3D video clips, indicating that there is little disparity between accommodation and convergence when 3D images are viewed.
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