Description
DEHAG, Prof. Frenzel 501 Nystagmus Spectacles with fixed lenses.Uses power supply type 505 not includedModern vestibular diagnostic demands a high degree of precision in the search for spontaneous and provoked nystagmus. In many cases, a correct diagnosis may only be achieved by using the complicated technology of electronystagmography (ENG). The new nystagmus glasses by Prof. Frenzel represent an easy to handle alternative. The examination with interior spectacles illumination takes place in a darkened room. Through the interior illumination of the spectacles the patient?s optical contact to its environment will be interrupted (elimination of the nystagmus-hindering fixation). At the same time the highly illuminated eyes are easily observable under magnifying glasses. By this, pathological nystagmus reaction is very often traceable when looking straight on, which without spectacles, even when looking sideways, is not clearly or not at all distinguishable. The head strap provides a secure fixation of the Spectacles in front of the patient's eyes and facilitates an easy search for spontaneous and provoked nystagmus, e.g. by shaking the head, storing or examinations on swivel-chairs.
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