The new way for the efficient
vestibular examination...
The Challenge
Eye movement measurements play an essential part in patient diagnosis by
providing the clinician with important qualitative and quantitative information.
However, traditional electronystagmography (ENG) has the same probelms inherent
in most electrode based systems, including biologic and external noise and
signal drift. Electrodes consume additional time and expense and are generally
an uncomfortable inconvenience for the patient. Lastly, ENG does not facilitate
the subjective evaluation of eye movements.
The Solution
Video Nystagmography (VNG) provides the solutions to the limitations of
previous measurement techniques. Video images of the eyes are obtained
without direct contact, using high resolution cameras with infrared illumination
for horizontal and vertical measurement. The setup is fast and as easy as using
Frenzel's glasses.
The eyes are visualized, enabling simultaneous subjective evaluation, while eye
movements are analyzed by digital image processing to obtain vertical and
horizontal eye position.
VNG demonstrates eye movement reactions for teaching purposes. Desease processes
can be visualized to both patients and students while being described by the
clinician.
A setup of standard tests enables a fast and efficient examination.
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