Morrison, Miranda; Kerkeni, Hassen; Korda, Athanasia; Räss, Simone; Caversaccio, Marco D.; Abegg, Mathias; Schneider, Erich; Mantokoudis, Georgios (2022). Automated alternate cover test for 'HINTS' assessment: a validation study. European archives of oto-rhino-laryngology, 279(6), pp. 2873-2879. Springer 10.1007/s00405-021-06998-w
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Morrison2021_Article_AutomatedAlternateCoverTestFor.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (1MB) | Preview |
OBJECTIVE
The alternate cover test (ACT) in patients with acute vestibular syndrome is part of the 'HINTS' battery test. Although quantitative, the ACT is highly dependent on the examiner's experience and could theoretically vary greatly between examiners. In this study, we sought to validate an automated video-oculography (VOG) system based on eye tracking and dedicated glasses.
METHODS
We artificially induced a vertical strabismus to simulate a skew deviation on ten healthy subjects, aged from 26 to 66, using different press-on Fresnel prisms on one eye while recording eye position with VOG of the contralateral eye. We then compared the system's performance to that of a blinded trained orthoptist using conventional, semi-quantitative method of skew measurement known as the alternate prism cover test (APCT) as a gold standard.
RESULTS
We found a significant correlation between the reference APCT and the Skew VOG (Pearson's R2 = 0.606, p < 0.05). There was a good agreement between the two tests (intraclass correlation coefficient 0.852, 95 CI 0.728-0.917, p < 0.001). The overall accuracy of the VOG was estimated at 80.53% with an error rate of 19.46%. There was no significant difference in VOG skew estimations compared with the gold standard except for very small skews.
CONCLUSIONS
VOG offers an objective and quantitative skew measurement and proved to be accurate in measuring vertical eye misalignment compared to the ACT with prisms. Precision was moderate, which mandates a sufficient number of tests per subject.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT) 04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ophthalmology 04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology |
UniBE Contributor: |
Morrison, Miranda Claire, Kerkeni, Hassen, Korda, Athanasia, Caversaccio, Marco, Abegg, Mathias, Mantokoudis, Georgios |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
0937-4477 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Mathias Abegg |
Date Deposited: |
05 Jan 2022 14:03 |
Last Modified: |
05 Dec 2022 15:57 |
Publisher DOI: |
10.1007/s00405-021-06998-w |
PubMed ID: |
34302212 |
Uncontrolled Keywords: |
Alternate cover test Skew deviation Test of skew Validation Video-oculography |
BORIS DOI: |
10.48350/162589 |
URI: |
https://boris.unibe.ch/id/eprint/162589 |
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