Title
Change of Blink Rate in Viewing Virtual Reality with HMD.
Abstract
The eye blink rate, a major human physiological response, directly affects ocular diseases, such as keratitis and dry eye syndrome. It has been shown that the eye blink rate in normal eyes has a certain frequency for individuals, from 6-30 times/min. It was suggested in a previous study that the eye blink rate can be decreased during the viewing of high-intensity and realistic content. Therefore, in this paper, we examine the change of the eye blink rate during the HMD (head-mounted display) viewing of VR (virtual reality) contents; accordingly, we propose an algorithm to measure the eye blink rate as well as compare and analyze this rate in three different environments (natural, monitor, and HMD). We confirmed that IPD (interpupillary distance) and phoria affected the eye blink rate in each environment. In this experiment, 21 subjects (28.38 +/- 6.87 years) were selected, and a paired t-test was performed for changes in the eye blink rate over 1 min for each environment. The IPD and phoria effects on the eye blink rate were confirmed using the Spearman's correlation coefficient. In this experiment, the eye blink rate was decreased in the monitor and HMD environments compared with the natural environment, while that in the HMD environment was decreased compared with the monitor environment. The results of the correlation analysis of far IPD and the eye blink rate show no statistical significance or correlation. The correlation analysis of near IPD and the eye blink rate showed a strong positive correlation of the eye blink rate in the monitor environment. The correlation analysis of distance phoria and the eye blink rate showed a strong negative correlation of the eye blink rate in the HMD environment. The correlation analysis of near-field phoria and the eye blink rate showed a strong negative correlation of the eye blink rate in the HMD environment. It is expected that the results of this study will be used as a VR-viewing recommendation.
Year
DOI
Venue
2018
10.3390/sym10090400
SYMMETRY-BASEL
Keywords
Field
DocType
blink rate,human factor,virtual reality,head-mounted display,IPD (interpupillary distance),phoria
Virtual reality,Mathematical analysis,Human–computer interaction,Mathematics
Journal
Volume
Issue
ISSN
10
9.0
2073-8994
Citations 
PageRank 
References 
3
0.44
1
Authors
4
Name
Order
Citations
PageRank
Jungho Kim161.90
Yadav Sunil Kumar230.44
Jisang Yoo393.64
Soon-Chul Kwon492.63