Effect of Induced Myopia on the Vestibulo-ocular Reflex Evaluated by Ocular Vestibular Evoked Myogenic Potential.
Purpose: The possible effects of refractive errors on vestibulo-ocular reflex (VOR) has been a conflicting issue. The aim of this study was to evaluate the effects of induced myopia on VOR using the ocular Vestibular Evoked Myogenic Potential (oVEMP). Methods: In this cross-sectional quasi-experimen...
| Publicado en: | Journal of Ophthalmic & Vision Research Vol. 19; no. 2; pp. 219 - 227 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Knowledge E DMCC
Apr-Jun2024
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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=178900681&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 178900681 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 20082010 AY5S jtl: Journal of Ophthalmic & Vision Research issn: 20082010 maglogo: N pubinfo: dt: Apr-Jun2024 vid: 19 iid: 2 pid: 35682 pub: Knowledge E DMCC artinfo: ui: 178900681 178900681 178900681 10.18502/jovr.v19i2.10910 178900681 ppf: 219 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Effect of Induced Myopia on the Vestibulo-ocular Reflex Evaluated by Ocular Vestibular Evoked Myogenic Potential. aug: au: Mazloom, Mahdi Shandiz, Javad Heravian Jafarzadeh, Sadegh Jamali, Jamshid Momeni-Moghaddam, Hamed affil: Department of Optometry, School of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran sug: subj: Myopia Complications Vestibular Diseases Risk Factors Risk Assessment Vestibular Function Tests Eye Movements Evoked Potentials, Auditory Evoked Potentials, Motor Reflex Physiology Human Iran Funding Source Iran Adult Academic Medical Centers Cross Sectional Studies Quasi-Experimental Studies Descriptive Statistics Adult: 19-44 years ab: Purpose: The possible effects of refractive errors on vestibulo-ocular reflex (VOR) has been a conflicting issue. The aim of this study was to evaluate the effects of induced myopia on VOR using the ocular Vestibular Evoked Myogenic Potential (oVEMP). Methods: In this cross-sectional quasi-experimental study, 35 emmetropic and normal subjects with the mean age of 23.89 ± 3.93 (range, 20-40 years) without any ocular, nervous system, and vestibular disorders, underwent the oVEMP test in the comprehensive rehabilitation center of Mashhad University of Medical Sciences. The oVEMP was performed under five different conditions of testing binocularly, monocularly, and when myopia was induced with the use of spherical lenses of +1.00, +3.00, and +5.00 diopters, respectively. There were 2 to 5 min of rest with closed eyes after each condition to avoid adaptation, fatigue, and any other sources of bias. Mean latencies of oVEMP waves (N1 and P1) and amplitudes of N1-P1 complex were measured. Results: There was no significant difference between the right and left sides (P > 0.05). The induced myopia significantly increased the N1 and P1 latencies using lenses of +1.00, +3.00, and +5.00 diopters but the amplitudes of N1-P1 complex were not influenced by the different amounts of induced myopia. There was no significant difference among the different conditions of induced myopia either (P >0.05). Conclusion: Induced myopia could affect the VOR due to prolonging the latencies of oVEMP waves. However, the amplitudes were not affected and the effects of multiple degrees of induced myopia were not significantly different. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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