European Archives of Oto-Rhino-Laryngology (2018) 275:2607 https://doi.org/10.1007/s00405-018-5016-2 LE T TER TO THE EDITOR Autophony of eyelid movement is not independent of eyeball movement Mahmood F. Bhutta Received: 1 May 2018 / Accepted: 23 May 2018 / Published online: 5 June 2018 © Springer-Verlag GmbH Germany, part of Springer Nature 2018 Bertholon et al. recently described characteristics of autoph- movement of the dura overlying the superior semicircular ony of eyeball or eyelid movement in six patients with supe- canal remains a valid and simple explanation . rior semicircular canal dehiscence (SSCD) syndrome . Funding None. They confirm my observation that autophony of eye move- ments is specific to this syndrome [2 ], but also report the Compliance with ethical standards novel finding of autophony of eyelid movement, which also appears to be specific to this syndrome. Conflict of interest Author MB declares that he has no conflict of in- However, the authors fail to consider that eyelid move- terest. ment is not independent of eyeball movement. Several stud- ies [3–5] show that the eyeballs invariably rotate downwards Ethical approval This article does not contain any studies with human participants or animals performed by any of the authors. and inwards with each blink, with this movement starting just before the blink is initiated . In the cohort of patients described by Bertholon et al., the majority described both autophony of eyeball and References autophony of eyelid movement, but, admittedly, there were patients with only one of these symptoms. This could be 1. Bertholon P, Reynard P, Lelonge Y, Peyron R, Vassal F, Karkas A (2018) Hearing eyeball and/or eyelid movements on the side interpreted as signifying independent aetiology, but the par- of a unilateral superior semicircular canal dehiscence. Eur Arch simonious explanation is that both these symptoms represent Otorhinolaryngol 275(2):629–635 differing manifestations of autophony of eyeball movement. 2. Bhutta MF (2015) Eye movement autophony in superior semicir- Perhaps those individuals who describe only autophony of cular canal dehiscence syndrome may be caused by trans-dural transmission of extraocular muscle contraction. Int J Audiol eyelid movements do so because the downward and inward 54(1):61–62 movement accompanying a blink is an otherwise unusual 3. Bour LJ, Aramideh M, de Visser BW (2000) Neurophysiological movement for the eyeball, and it is only when this specific aspects of eye and eyelid movements during blinking in humans. eyeball movement occurs that these patients experience the J Neurophysiol 83(1):166–176 4. Bergamin O, Bizzarri S, Straumann D (2002) Ocular torsion symptom. during voluntary blinks in humans. Investig Ophthalmol Vis Sci Bertholon et al. admit that autophony of eyeball and eye- 43(11):3438–3443 lid movement is difficult to explain. If, in fact, both these 5. Rambold H, Sprenger A, Helmchen C (2002) Effects of volun- symptoms relate to eyeball movement, then my theory of tary blinks on saccades, vergence eye movements, and saccade- vergence interactions in humans. J Neurophysiol 88(3):1220–1233 direct transmission of extraocular muscle contraction to This comment refers to the article available at https ://doi. org/10.1007/s0040 5-017-4781-7. * Mahmood F. Bhutta firstname.lastname@example.org Department of ENT, Brighton & Sussex University Hospitals NHS Trust, Eastern Road, Brighton BN2 5BE, UK Vol.:(0123456789) 1 3
European Archives of Oto-Rhino-Laryngology – Springer Journals
Published: Jun 5, 2018
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