Unlikely, but: there may be no nystagmus between episodes, or nystagmus my be so subtle that it is hard to see. Frenzel goggles, especially of the type using a TV camera, are sometimes used as a diagnostic aid in order to magnify and illuminate nystagmus. - See more at: http://vestibular.org/understanding-vestibular-disorders/types-vestibular-disorders/benign-paroxysmal-positional-vertigo#sthash.R6HTXLWc.dpuf
Answered 1/5/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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