Benefits of matching accommodative demands to vergence demands in a binocular head-mounted display: A study on stereo fusion times

Authors:
Richard H. Y. So;W. S. Wong;Romeo Yip;Andrew K. C. Lam;Patrick Ting
Affiliations:
Department of Industrial Engineering and Logistics Management, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong SAR;Department of Industrial Engineering and Logistics Management, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong SAR;Department of Industrial Engineering and Logistics Management, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong SAR;School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hung Hom, Hong Kong SAR;School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hung Hom, Hong Kong SAR
Venue:
Presence: Teleoperators and Virtual Environments
Year:
2011

Citing 5
Cited 0

Health issues with virtual reality displays: what we do know and what we don't

ACM SIGGRAPH Computer Graphics
A stereo display prototype with multiple focal distances

ACM SIGGRAPH 2004 Papers
Combining head-mounted and projector-based displays for surgical training

Presence: Teleoperators and Virtual Environments - Special issue: IEEE VR 2003
Human Factors Issues in Virtual Environments: A Review of the Literature

Presence: Teleoperators and Virtual Environments
Dynamic adjustment of stereo display parameters

IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans

Quantified Score

Hi-index	0.00

Visualization

Abstract

Current head-mounted displays (HMDs) provide only a fixed lens focus. Viewers have to decouple their accommodation and vergence responses when viewing stereoscopic images presented on an HMD. This study investigates the time taken to fuse a pair of stereoscopic images displayed on an HMD when the accommodative demand is matched to the vergence demand. Four testing conditions exhausting the factorial combinations of accommodative demands (2.5 D and 0.5 D) and vergence demands (2.5 MA and 0.5 MA) were investigated. The results indicate that viewers take a significantly shorter amount of time to fuse a pair of stereoscopic images (i.e., fusion time) when the accommodative demand and the stereoscopic depth cues match. Further analysis suggests that an unnatural demand for the eyes to verge toward stereoscopic images whose stereo depth is farther than the accommodative demand is associated with significantly longer fusion time. This study evaluates the potential benefits of using a dynamically adjustable lens focus in future designs of HMDs.