Dynamic visual acuity during head-thrust test in canal planes in healthy subjects and patients with vestibular neuritis

Viciana, David; J, Ferrer; Palma, María Jesús Castillo; Zapata, Cristóbal; Lopez-Escamez, José A.

doi:10.3109/00016481003785994

Cited by 12 publications

(13 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Age has previously been related to poorer active DVA in individuals regardless of degree of vestibular loss (i.e., normal, unilateral or bilateral peripheral vestibular involvement) (8;11;13;18). Likewise, Viciana et al (19) also demonstrated that htDVA significantly worsens with age. Schubert et al (5) originally proposed that htDVA scores falling outside 0.158 LogMAR (mean + 2 SD in normal controls, n = 19) be considered the cut off for pathologically abnormal htDVA.…”

Section: Discussionmentioning

confidence: 89%

“…Schubert et al (5) originally proposed that htDVA scores falling outside 0.158 LogMAR (mean + 2 SD in normal controls, n = 19) be considered the cut off for pathologically abnormal htDVA. However, this htDVA cutoff is likely inappropriate for normal individuals over the age of 60 as the 95 th percentile reference value projected by Viciana et al (19) ranges from 0.230 – 0.330 LogMAR. Our findings continue to support that visual acuity performance is dependent on age, and that age-based normative data are necessary for determining a diagnostic cutoff, particularly for individuals greater than 60 years of age.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Canal Plane Dynamic Visual Acuity in Superior Canal Dehiscence

Janky¹,

Zúñiga²,

Ward³

et al. 2014

Otology &Amp; Neurotology

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Canal Plane Dynamic Visual Acuity in Superior Canal Dehiscence

Janky¹,

Zúñiga²,

Ward³

et al. 2014

Otology &Amp; Neurotology

View full text Add to dashboard Cite

“…Another study of the angular VOR in response to yaw stimuli of 60 to 100°/s found responses in subjects older than 75 years to be 89% of the response of people age 18 to 39, but the difference was not significant (Baloh et al 1993). Dynamic visual acuity with head rotation, which is test of the angular VOR as well as vision, also declines with age (Viciana et al 2010). Thus, although angular VOR function declines with age, the decline is small compared with that seen in the LVOR and VEMP.…”

Section: The Effect Of Agingmentioning

confidence: 99%

Directional Asymmetries and Age Effects in Human Self-Motion Perception

Roditi

Crane

2012

JARO

109

View full text Add to dashboard Cite

Directional asymmetries in vestibular reflexes have aided the diagnosis of vestibular lesions; however, potential asymmetries in vestibular perception have not been well defined. This investigation sought to measure potential asymmetries in human vestibular perception. Vestibular perception thresholds were measured in 24 healthy human subjects between the ages of 21 and 68 years. Stimuli consisted of a single cycle of sinusoidal acceleration in a single direction lasting 1 or 2 s (1 or 0.5 Hz), delivered in sway (leftright), surge (forward-backward), heave (up-down), or yaw rotation. Subject identified self-motion directions were analyzed using a forced choice technique, which permitted thresholds to be independently determined for each direction. Non-motion stimuli were presented to measure possible response bias. A significant directional asymmetry in the dynamic response occurred in 27% of conditions tested within subjects, and in at least one type of motion in 92% of subjects. Directional asymmetries were usually consistent when retested in the same subject but did not occur consistently in one direction across the population with the exception of heave at 0.5 Hz. Responses during null stimuli presentation suggested that asymmetries were not due to biased guessing. Multiple models were applied and compared to determine if sensitivities were direction specific. Using Akaike information criterion, it was found that the model with direction specific sensitivities better described the data in 86% of runs when compared with a model that used the same sensitivity for both directions. Mean thresholds for yaw were 1.3±0.9°/s at 0.5 Hz and 0.9±0.7°/s at 1 Hz and were independent of age. Thresholds for surge and sway were 1.7±0.8 cm/s at 0.5 Hz and 0.7±0.3 cm/s at 1.0 Hz for subjects G50 and were significantly higher in subjects 950 years old. Heave thresholds were higher and were independent of age.

show abstract

“…Size of the smallest optotype displayed varies across studies and may also contribute to reliability. In the current study, the smallest optotype displayed was 20/ 10 (consistent with NIH DVA protocol; 10), whereas some previous studies have limited the smallest optotype to 20/20 (6,7,16). Another difference between studies is the distance at which the test was administered.…”

Section: Reliabilitymentioning

confidence: 70%

“…Furthermore, active head movements reflect some activities of daily living (e.g., looking both ways to cross a street). This testing paradigm has been used across several studies examining DVA (e.g., [6][7][8][9][10][11]20); whereas other studies have used a nonvolitional (passive) head movement for assessment of DVA (16,25,26). The ability to preprogram eye movements for gaze stability is different for active versus passive head movements; thus, comparison of the current study's results is limited to studies using active head movements.…”

Section: Limitationsmentioning

confidence: 99%

Reliability and Normative Data for the Dynamic Visual Acuity Test for Vestibular Screening

Riska

Hall

2016

Otology &Amp; Neurotology

View full text Add to dashboard Cite

Hypothesis: The purpose of this study was to determine reliability of computerized dynamic visual acuity (DVA) testing and to determine reference values for younger and older adults. Background: A primary function of the vestibular system is to maintain gaze stability during head motion. The DVA test quantifies gaze stabilization with the head moving versus stationary. Commercially available computerized systems allow clinicians to incorporate DVA into their assessment; however, information regarding reliability and normative values of these systems is sparse. Methods: Forty-six healthy adults, grouped by age, with normal vestibular function were recruited. Each participant completed computerized DVA testing including static visual acuity, minimum perception time, and DVA using the NeuroCom inVision System. Testing was performed by two examiners in the same session and then repeated at a follow-up session 3 to 14 days later. Intraclass correlation coefficients (ICCs) were used to determine inter-rater and test-retest reliability. Results: ICCs for inter-rater reliability ranged from 0.323 to 0.937 and from 0.434 to 0.909 for horizontal and vertical head movements, respectively. ICCs for test-retest reliability ranged from 0.154 to 0.856 and from 0.377 to 0.9062 for horizontal and vertical head movements, respectively. Overall, raw scores (left/right DVA and up/down DVA) were more reliable than DVA loss scores. Conclusion: Reliability of a commercially available DVA system has poor-to-fair reliability for DVA loss scores. The use of a convergence paradigm and not incorporating the forced choice paradigm may contribute to poor reliability. Key Words: Dynamic visual acuity-ReliabilityVestibular. 37:545-552, 2016. Dizziness is among the most prevalent complaints for which people seek medical help and the incidence of dizziness increases with age (1,2). Although dizziness has many etiologies, it is often related to vestibular pathology which is treated effectively with vestibular rehabilitation (3). Uncompensated vestibular loss results in subjective complaints of imbalance, oscillopsia, and/or vertigo and postural and gaze instability. These impairments can result in decreased activity and avoidance of driving with resultant diminished independence and social isolation (4,5). Appropriate clinical management of patients with vestibular deficits necessitates that valid and reliable tools are available to clinicians. Otol NeurotolGaze stability during head movements is the primary function of the vestibulo-ocular reflex (VOR). When functioning normally, the VOR generates eye movements equal and opposite to head rotation, which enables images to remain stable on the fovea during head motion. The dynamic visual acuity test (DVA) is a functional measure of the VOR and quantifies the difference in visual acuity with the head still and then moving. Computerized DVA for horizontal head movement was introduced as a research measurement tool and demonstrated very good reliability (ICC ¼ 0.83-0.87) and excellent sensitivity ...

show abstract

Dynamic visual acuity during head-thrust test in canal planes in healthy subjects and patients with vestibular neuritis

Cited by 12 publications

References 19 publications

Canal Plane Dynamic Visual Acuity in Superior Canal Dehiscence

Canal Plane Dynamic Visual Acuity in Superior Canal Dehiscence

Directional Asymmetries and Age Effects in Human Self-Motion Perception

Reliability and Normative Data for the Dynamic Visual Acuity Test for Vestibular Screening

Contact Info

Product

Resources

About