Journal of Rehabilitation Research & Development (JRRD)

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Volume 49 Number 2, 2012
   Pages 209 — 220

Abstract — New portable tool to screen vestibular and visual function—National Institutes of Health Toolbox initiative

Rose Marie Rine, PT, PhD;1* Dale Roberts, MS;2 Bree A. Corbin, MPT;1 Roberta McKean-Cowdin, PhD;3 Rohit Varma, MD, MPH;4 Jennifer Beaumont, MS;5 Jerry Slotkin, PhD;5 Michael C. Schubert, PT, PhD6

1University of North Florida, Jacksonville, FL; 2Department of Neurology and Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD; 3Department of Preventive Medicine, Keck School of Medicine of University of Southern California, Los Angeles, CA; 4Department of Ophthalmology, Keck School of Medicine of University of Southern California, Los Angeles, CA; 5Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL; 6Department of Otolaryngology–Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD

Abstract — As part of the National Institutes of Health Toolbox initiative, we developed a low-cost, easy-to-administer, and time-efficient test of vestibular and visual function. A computerized test of dynamic visual acuity (cDVA) was used to measure the difference in visual acuity between head still and moving in yaw. Participants included 318 individuals, aged 3 to 85 years (301 without and 17 with vestibular pathology). Adults used Early Treatment of Diabetic Retinopathy Study (ETDRS) optotypes; children used ETDRS, Lea, and HOTV optotypes. Bithermal calorics, rotational chair, and light box testing were used to validate the cDVA. Analysis revealed that the cDVA test is reliable for static (intraclass correlation coefficient [ICC] >/= 0.64) and dynamic (ICC >/= 0.43–0.75) visual acuity. Children younger than 6 years old were more likely to complete cDVA with Lea optotypes, but reliability and correlation with ETDRS was better using HOTV optotypes. The high correlation between static acuity and light box test scores (r = 0.795), significant difference of cDVA scores between those with and without pathology (p </= 0.04), and the good to excellent sensitivity (73%) and specificity (69%) establish that the cDVA is a valid and reliable measure of visual acuity when the head is still and moving, as well as a good proxy of vestibular function to yaw rotation.

Key words: dynamic visual acuity, gaze stability, NIH Toolbox, optotype, static visual acuity, vestibular, vestibular rehabilitation, vestibular test, vision, vision test.


View HTML  ¦  View PDF  ¦  Contents Vol. 49, No. 2
This article and any supplementary material should be cited as follows:
Rine RM, Roberts D, Corbin BA, McKean-Cowdin R, Varma R, Beaumont J, Slotkin J, Schubert MC. New portable tool to screen vestibular and visual function—National Institutes of Health Toolbox initiative. J Rehabil Res Dev. 2012;49(2):209–20.
http://dx.doi.org/10.1682/JRRD.2010.12.0239
iThenticateCrossref

1
Vestibular Team: R. M. Rine, M. Schubert, S. Whitney, N. Shepard, D. Wrisley, G . Jacobsen, J. Carey, J. Slotkin, H. Hoffman. Vision Team: R. Varma, R. McKean-Cowdin, K. Cruickshanks, R. Hays, C. Johnson, M. Maguire, R. Massof, C. Owsley, M. Repka, S. Vitale, M. Wall.

Last Reviewed or Updated  Wednesday, April 4, 2012 12:28 PM

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