[Strabismus induced by peripheral vestibular lesions].
Little attention has been paid in the ophthalmological literature to strabismus resulting from lesions located in the peripheral vestibular system. However, this phenomenon is commonly encountered in clinical practice. As a rule, this kind of strabismus shows a prominent vertical component. It is generally combined with a change in perception of verticality, conjugate cyclotorsion of the eyes, and head tilt. This association is known as "ocular tilt reaction". It occurs in a number of clinical settings which are believed to be related with alteration in the otolithical and/or vertical semicircular canal pathways. Strabismus occurring as a feature of ocular tilt reaction might result from different mechanisms according to the location of the lesion, e.g. in the utricles, in the midbrain tegmentum, and in the dorso-lateral medulla oblongata. This phenomenon is illustrated here with the report of a patient suffering from Ménière disease, who underwent selective vestibular neurectomy. Methods of ophthalmological evaluation in such cases is described.
Safran
A B
AB
Clinique universitire d'ophtalmologie de Genève.
Haüsler
R
R
Issoua
D
D
Stepanian
E
E
Chiari
M
M
Vibert
D
D
Roth
A
A
D000368:Aged; D005260:Female; D006801:Humans; D008575:Meniere Disease / Q000503:physiopathology* / Q000601:surgery; D004856:Postural Balance / Q000502:physiology; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology; D013285:Strabismus / Q000503:physiopathology* / Q000601:surgery; D014724:Vestibular Function Tests; D014725:Vestibular Nerve / Q000503:physiopathology / Q000601:surgery
Strabismes induits par des lésions vestibulaires périphériques.