Reading performance as screening tool for visual complaints from stereoscopic content

Abstract Some people experience visual discomfort when watching stereoscopic content, which to a large extent can be predicted by their binocular visual status. Earlier research has proven that the binocular status can be assessed by the difference in reading speed between 2-D and 3-D. In this paper, we further substantiate the evidence for a tool to screen people on their susceptibility to such visual complaints based on this reading speed difference. In an experiment participants were asked to (1) perform the Wilkins Rate of Reading Test (WRRT) at three disparities (−1.5°, 0° and 1.5°) preceded and followed by fusion measurements and self-reports, and (2) scale the screen disparity of stimuli to a threshold of visual discomfort. Participants were categorized based on the WRRT-ratio, being the ratio of the number of words read at 0° disparity over the number of words read at −1.5° disparity. Our results showed that only participants with a high WRRT-ratio revealed a tendency in changed fusion range indicating visual fatigue. They also reported significantly more visual discomfort in stereoscopic conditions and had lower thresholds in screen disparity for visual discomfort than participants with a normal WRRT-ratio. Hence, the WRRT-ratio has potential as a visual screening tool in 3-D consumer applications to warn viewers that are susceptible to visual discomfort when watching stereoscopic content.

[1]  V. Goffaux,et al.  The horizontal tuning of face perception relies on the processing of intermediate and high spatial frequencies. , 2011, Journal of vision.

[2]  Bruce J W Evans,et al.  The Mallett Fixation Disparity Test: influence of test instructions and relationship with symptoms , 2006, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[3]  Bruce J. W. Evans,et al.  Pickwell's Binocular Vision Anomalies , 1997 .

[4]  Romain Cousseau,et al.  Is visual fatigue changing the perceived depth accuracy on an autostereoscopic display? , 2011, Electronic Imaging.

[5]  A. Wilkins,et al.  Rate of Reading Test®: its reliability, and its validity in the assessment of the effects of coloured overlays , 1996, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[6]  G. Gescheider.  Psychophysics: The Fundamentals , 1997 .

[7]  L. Thurstone.  A law of comparative judgment. , 1994 .

[8]  Rolph E. Anderson,et al.  Multivariate Data Analysis (7th ed. , 2009 .

[9]  Masaki Emoto,et al.  Changes in fusional vergence limit and its hysteresis after viewing stereoscopic TV , 2004 .

[10]  Mtm Marc Lambooij,et al.  Visual Discomfort and Visual Fatigue of Stereoscopic Displays: A Review , 2009 .

[11]  J C Arezzo,et al.  Quantitative sensory testing , 2003, Neurology.

[12]  M. Boschman,et al.  ThurCatD: A tool for analyzing ratings on an ordinal category scale , 2000, Behavior research methods, instruments, & computers : a journal of the Psychonomic Society, Inc.

[13]  D Stidwill,et al.  Epidemiology of strabismus , 1997, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[14]  J. Häkkinen,et al.  Subjective measures of presence and discomfort in viewers of color‐separation‐based stereoscopic cinema , 2009 .

[15]  Patrick Le Callet,et al.  New stereoscopic video shooting rule based on stereoscopic distortion parameters and comfortable viewing zone , 2011, Electronic Imaging.

[16]  Ingrid Heynderickx,et al.  An exploration of the initial effects of stereoscopic displays on optometric parameters , 2011, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[17]  M Scheiman.  Accommodative and binocular vision disorders associated with video display terminals: diagnosis and management issues. , 1996, Journal of the American Optometric Association.

[18]  David M. Hoffman,et al.  Perceptual Issues in Stereoscopic Signal Processing , 2011, IEEE Transactions on Broadcasting.

[19]  David M. Hoffman,et al.  The zone of comfort: Predicting visual discomfort with stereo displays. , 2011, Journal of vision.

[20]  Wa Wijnand IJsselsteijn,et al.  Measuring visual fatigue and visual discomfort associated with 3‐D displays , 2010 .

[21]  Robert Montés-Micó,et al.  Prevalence of general dysfunctions in binocular vision , 2001 .

[22]  Wa Wijnand IJsselsteijn,et al.  Visual discomfort in stereoscopic displays: a review , 2007, Electronic Imaging.

[23]  J. Sheedy,et al.  Is all Asthenopia the Same? , 2003, Optometry and vision science : official publication of the American Academy of Optometry.

[24]  E. Peli.  Optometric and Perceptual Issues with Head-mounted Displays , 2010 .

[25]  David M. Hoffman,et al.  Vergence-accommodation conflicts hinder visual performance and cause visual fatigue. , 2008, Journal of vision.

[26]  Arnold J. Wilkins,et al.  Rate of Reading Test®: its reliability, and its validity in the assessment of the effects of coloured overlays , 1996 .

[27]  T. Freeman,et al.  Motion perception during sinusoidal smooth pursuit eye movements: signal latencies and non-linearities. , 2008, Journal of vision.

[28]  Chris Varekamp,et al.  Challenges in 3DTV image processing , 2007, Electronic Imaging.

[29]  G. Mitchell,et al.  Validity and Reliability of the Revised Convergence Insufficiency Symptom Survey in Children Aged 9 to 18 Years , 2003, Optometry and vision science : official publication of the American Academy of Optometry.

[30]  F. Okano,et al.  Repeated vergence adaptation causes the decline of visual functions in watching stereoscopic television , 2005, Journal of Display Technology.

[31]  K. Ciuffreda.  The scientific basis for and efficacy of optometric vision therapy in nonstrabismic accommodative and vergence disorders. , 2002, Optometry.

[32]  Filippo Speranza,et al.  Effect of disparity and motion on visual comfort of stereoscopic images , 2006, Electronic Imaging.

[33]  Wijnand A. IJsselsteijn,et al.  Visual discomfort of 3D TV: Assessment methods and modeling , 2011, Displays.

[34]  Masaki Emoto,et al.  Two factors in visual fatigue caused by stereoscopic HDTV images , 2004 .

[35]  Wijnand A. IJsselsteijn,et al.  Susceptibility to Visual Discomfort of 3-D Displays by Visual Performance Measures , 2011, IEEE Transactions on Circuits and Systems for Video Technology.

[36]  I. Heynderickx,et al.  Measuring visual discomfort associated with 3D displays , 2009, Electronic Imaging.