Comparison of horizontal and vertical dynamic visual acuity in patients with vestibular dysfunction and nonvestibular dizziness.
Blurred vision with head movement is a common symptom reported by patients with vestibular dysfunction affecting the vestibulo-ocular reflex (VOR). Impaired VOR can be measured by comparing visual acuity in which there is no head movement to visual acuity obtained with head movement. A previous stud...
| Publicado en: | Journal of the American Academy of Audiology Vol. 18; no. 3; pp. 236 - 245 |
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| Autores principales: | , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Thieme Medical Publishing Inc.
Mar2007
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106139853&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106139853 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10500545 9OC jtl: Journal of the American Academy of Audiology issn: 10500545 maglogo: Y pubinfo: dt: Mar2007 vid: 18 iid: 3 pid: 2811 pub: Thieme Medical Publishing Inc. place: New York, New York artinfo: ui: 106139853 24856266 2009567836 10.3766/jaaa.18.3.5 NLM17479616 106139853 ppf: 236 ppct: 9 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Comparison of horizontal and vertical dynamic visual acuity in patients with vestibular dysfunction and nonvestibular dizziness. aug: au: Roberts RA Gans RE affil: American Institute of Balance, 8200 Bryan Dairy Road, Suite 340, Largo, FL 33777; rroberts@dizzy.com sug: subj: Dizziness Vestibule, Labyrinth Physiopathology Vision Disorders Adolescence Adult Aged Analysis of Variance Case Control Studies Clinical Assessment Tools Comparative Studies Data Collection, Computer Assisted Female Head Male Middle Age Movement Post Hoc Analysis Sensitivity and Specificity Vestibular Diseases Vision Tests Human Adolescent: 13-18 years Adult: 19-44 years Aged: 65+ years Middle Aged: 45-64 years Female Male ab: Blurred vision with head movement is a common symptom reported by patients with vestibular dysfunction affecting the vestibulo-ocular reflex (VOR). Impaired VOR can be measured by comparing visual acuity in which there is no head movement to visual acuity obtained with head movement. A previous study demonstrated that dynamic visual acuity (DVA) testing using vertical head movement revealed deficits in impaired VOR. There is evidence that horizontal head movement is more sensitive to impaired VOR. The objective of this investigation was to compare horizontal and vertical DVA in participants with normal vestibular function (NVF), impaired vestibular function (IVF), and participants with nonvestibular dizziness (NVD). Participants performed the visual acuity task in a baseline condition with no movement and also in two dynamic conditions, horizontal head movement and vertical head movement. Horizontal DVA was twice as sensitive to impaired VOR than vertical DVA. Results suggest that horizontal volitional head movement should be incorporated into tasks measuring functional deficits of impaired VOR. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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