Diagonostic Instruments

VNG  Systems

VNG Compared to ENG 

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 problems 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.

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.

Efficient Vestibular Examinations

The Interacoustics VNG Modules offer complete Oculographic analysis that is easy to administer and comfortable for the patient.The software modules comprise: 

Video Oculography with VO25

 Video Nystagmography with VN15

One Basic Hardware Platform

These two software modules operate on one basic hardware platform, the Interacoustics MedPC, designed for convenient transportation around a      clinic.
These two software modules may operate on one of the following hardware platforms:

 Video Frenzel System with VF5

Cost effective system for recording and observing fixation free eye movements on patients suffering from balance disorders. Consists of Camera, Combi Mask and Camera Control Box.