New portable tool to screen vestibular and visual function-National institutes of health toolbox initiative

Rose Marie Rine, Dale Roberts, Bree A. Corbin, Roberta Mckean-Cowdin, Rohit Varma, Jennifer Beaumont, Jerry Slotkin, Michael C. Schubert

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)209-220
Number of pages12
JournalJournal of Rehabilitation Research and Development
Issue number2
StatePublished - 2012


  • Dynamic visual acuity
  • Gaze stability
  • Nih tool-box
  • Optotype
  • Static visual acuity
  • Vestibular
  • Vestibular reha-bilitation
  • Vestibular test
  • Vision
  • Vision test

ASJC Scopus subject areas

  • Rehabilitation


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