3D visual fatigue: Interaction between ranges of binocular disparity and interocular crosstalk

We investigated biomedical effects of stereoscopic 3D (s3D) images on visual fatigue, especially the effects of binocular disparity range and interocular crosstalk. Fifteen observers, aged from 22 to 59, watched s3D images for approx. 10 minutes performing visual searches of a target moving in depth among 90 distracters. The results showed that for larger crosstalk and larger disparity range, (i) search time was longer, (ii) subjective score of uncomfortability was larger, and (iii) total score of visual fatigue questionnaire was larger. Moreover, the search time and the scores increased more drastically with disparity range when crosstalk is smaller.