Neurology: Optokinetic Nystagmus and Head Thrust Impulse Testing (Yi Chang) from vestibulo ocular test Watch Video
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Description: A neurologist is testing for optokinetic nystagmus on a male patient with dark eyes. He is using an OKN strip in the horizontal and vertical directions, as well as performing a head impulse test to identify individuals with hypofunction of the vestibulo-ocular reflex (CN VIII).nnnClinician: J. Alexander Fraser, MD, FRCPC, Departments of Clinical Neurological Sciences and Department of Ophthalmology, Western University.
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