Age-related changes in accommodation predict perceptual tolerance to vergence-accommodation conflicts in stereo displays

Watt, Simon J.; Ryan, Louise

doi:10.1167/15.12.267

Cited by 6 publications

(4 citation statements)

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“…On the other hand, image processing‐based simulation 14 (not included in the manuscript) suggests that pupil size, at least in the age groups included in our study, does not have a major impact on the task. Nevertheless, our results are broadly in line with the notion that older users may be more tolerant to, at least moderate amount of, VAC, 15,16 although it is difficult to directly compare our results with the previous reports due to the major difference in the experimental design. On the other hand, the older cohort tends to be more susceptible to higher degrees of negative VAC (i.e., far vergence distance and close focal distance).…”

Section: Discussionsupporting

confidence: 88%

Vergence‐accommodation conflict increases time to focus in augmented reality

Spiegel,

Erkelens

2024

J Soc Info Display

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Vergence‐accommodation conflicts (VAC) occur in near‐eye displays when the binocular disparity of the 3D rendered content (vergence) does not match the display focal distance (accommodation). VAC has been shown to reduce perceptual image quality, cognitive performance, and oculomotor coordination. In this study, we aimed to investigate the impact of VAC on visual performance in augmented reality (AR). Specifically, we quantified the impact of AR VAC on the ‘Time to Focus’ (TTF); when the user switches focus between real‐world content and world‐locked AR‐rendered content. Our results show that TTF increases exponentially with VAC. The increase is more pronounced at closer vergence distances in displays with a focal distance of 1 D or longer. Finally, we showed that VAC may have a differential effect across age groups; specifically, older users may be affected more in closer focal and longer vergence distances.

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Section: Discussionsupporting

confidence: 88%

Vergence‐accommodation conflict increases time to focus in augmented reality

Spiegel,

Erkelens

2024

J Soc Info Display

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“…This trend indicates that on average, the older population may be more resilient to VAC for lower VAC values. This finding is intriguing; however, it is in line with previous reports (6,7). The higher susceptibility to VAC at shorter focal distances can be putatively attributed to the age-related decrease in accommodative range.…”

Section: -3 / D P Spiegel • Distinguished Papersupporting

confidence: 91%

16‐3: Distinguished Paper: Vergence‐Accommodation Conflict Increases Time to Focus in Augmented Reality

Spiegel,

Erkelens

2024

Symp Digest of Tech Papers

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Vergence‐Accommodation Conflicts (VAC) occur in neareye displays when the binocular disparity of the 3D rendered content (vergence) does not match the display focal distance (accommodation). VAC has been shown to reduce perceptual image quality, cognitive performance, and oculomotor coordination. In this study, we aimed to investigate the impact of VAC on visual performance in augmented reality (AR). Specifically, we quantified the impact of AR VAC on the ‘Time to Focus’ (TTF); when the user switches focus between real world content and worldlocked AR rendered content. Our results show that TTF increases exponentially with VAC. The increase is more pronounced at closer vergence distances in displays with focal distance of 1 D or longer. Finally, we showed that VAC may have a differential effect across age groups; specifically, older users may be affected more in closer focal and longer vergence distances 186‐189.

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“…When the accommodative gain data is viewed as a function of age for the adaptive mode, a trend whose ramifications are familiar to most over age 45 appears. The ability to accommodate degrades with age, suggesting that the VAC may differ for older users [10]. This is in fact reflected in sharpness ratings given by older users, and in their accommodative gain responses (Figure 3b,c).…”

Section: Vergence-accommodation Conflict For Presbyopesmentioning

confidence: 97%

4‐3: Invited Paper: Gaze‐contingent Adaptive Focus Near‐eye Displays

Padmanaban

Konrad

Cooper

et al. 2017

Symp Digest of Tech Papers

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The primary device for personal computing has consistently evolved over the years, from desktops to mobile devices, and now to the newly emerging trend of wearable computing. Wearable computing is expected to be integral to consumer electronics, with the primary mode of interaction for the user often being a neareye display. To prepare for the shift to near-eye displays, several limitations of current-generation near-eye displays must be addressed, including the inability to provide fully natural focus cues for all users, which can lead to discomfort. A core issue causing these limitations is the optics of the systems themselves, with current displays simply being unable to reproduce changes in focus that natural vision entails. In addition, the form factor often makes it difficult for users with refractive errors to use their corrective eyewear. With two prototype near-eye displays employing computational optics, we demonstrate how these issues can be overcome using display modes that adapt to the user. These prototype systems make use of focus-tunable lenses, mechanically actuated displays, and gaze tracking technology to customize the experience to each specific user to correct common refractive errors, and provide natural focus cues by dynamically updating scene depth based on where a user looks in a scene. These and other advances in computational optics hint at a future in which computational optics enable some users to experience better vision in the virtual world than in the real one.

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Age-related changes in accommodation predict perceptual tolerance to vergence-accommodation conflicts in stereo displays

Cited by 6 publications

References 0 publications

Vergence‐accommodation conflict increases time to focus in augmented reality

Vergence‐accommodation conflict increases time to focus in augmented reality

16‐3: Distinguished Paper: Vergence‐Accommodation Conflict Increases Time to Focus in Augmented Reality

4‐3: Invited Paper: Gaze‐contingent Adaptive Focus Near‐eye Displays

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