Altered vision during motion: an unusual symptom of cerebellar dysfunction, quantifiable by a simple clinical test.

Détails

ID Serval
serval:BIB_816127135EF1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Altered vision during motion: an unusual symptom of cerebellar dysfunction, quantifiable by a simple clinical test.
Périodique
Acta Ophthalmologica
Auteur(s)
Kaeser P.F., Borruat F.X.
ISSN
1755-3768[electronic], 1755-375X[linking]
Statut éditorial
Publié
Date de publication
2010
Peer-reviewed
Oui
Volume
88
Numéro
7
Pages
791-796
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
PURPOSE: To report a series of patients with cerebellar dysfunction and altered vision during motion, and to quantify their visual impairment in motion with a simple clinical test. METHODS: Twenty consecutive patients suffering from cerebellar dysfunction and altered vision during motion were examined between 1994 and 2007. A control group consisted of 20 age- and sex-matched healthy people. All patients had a full neuro-ophthalmic examination. Near visual acuity (NVA) was measured at rest (static NVA) and during chair rotation (dynamic NVA). Distance visual acuity (DVA) was measured at rest (static DVA) and during rotation of the patient's head (dynamic DVA). RESULTS: Only four of the 20 patients reported altered vision during motion spontaneously. The remaining 16 patients admitted this unusual visual disturbance only when asked specifically. All patients exhibited abnormal eye movements, including saccadic smooth pursuit (20/20), dysmetric saccades (15/20), nystagmus (19/20) and impaired suppression of vestibulo-ocular reflex (VOR) (20/20). During rotation of the examination chair (dynamic NVA), the drop in NVA averaged 5.6 lines (range 1-10 lines). During rotation of the patient's head (dynamic DVA), the drop in DVA averaged only 2.5 lines (range 0-10 lines). For the control group, there was no significant drop in NVA under dynamic conditions. CONCLUSION: Patients with cerebellar dysfunction rarely complain spontaneously of altered vision during motion. However, specific questioning may bring up this unusual symptom. The use of a simple clinical test, consisting of NVA measurement during rotation of the examination chair (dynamic NVA), allows practitioners to quantify the level of visual impairment in patients presenting altered VOR modulation.
Pubmed
Web of science
Open Access
Oui
Création de la notice
12/11/2010 14:53
Dernière modification de la notice
20/08/2019 14:41
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