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Telefon Dehag

0551 / 32519

Telefon Dehag

0551 / 376106

Nystagmus Spectacle Type 523

ble_523aby Dr. Blessing  


Nystagmus Spectacle with:

  • fixed lenses
  • adjustable battery grip




Nystagmus Spectacle with battery grip and fixed glasses by Dr. Blessingble_523c

Modern vestibular diagnostics require a high degree of precision when looking for spontaneous or provoked nystagmus. In many cases, the only way of making a correct diagnosis was to perform a technically complex electronystagmography (ENG). The new nystagmus glasses by De. Blessing represent a user-friendly alternative. With these new goggles, nystagmus intensity and amplitude achieve 80% – 99% of ENG values. Dr. Blessing’s new Nystagmus Goggles are illuminated indirectly so as to not trigger light reflexes that could have the undesired, nystagmus-inhibiting effect of visual fixation in the patient. As shielding of the light bulbs means that light does not fall directly onto the patient’s eyes, no PURKINJE vein image occurs, the movement of which could trigger arbitrary “illuminated goggles nystagmus”. As such, we avoid false positive nystagmus results. The actual examination using these goggles takes place in a dark or a heavily dimmed room. The illumination of the inside of the goggles causes the patient to lose visual contact with his/her surroundings (preventing nystagmus-inhibiting visual fixation). At the same time, it is especially easy to observe the patient’s brightly illuminated eyes using magnifying lenses. This means it is often possible to detect immediately, just by looking at the patient, pathological nystagmus processes that would be impossible or difficult to detect, even when looking sideways.


Nystagmus Spectacle Type 523ble_523b

The Nystagmus Spectacles Type-523 can be used to perform short-term examinations on patients. This model is cordless and does not require an electrical connection. The nystagmus goggles are powered by an adjustable battery grip that is installed facing upwards and is designed to accommodate three 1.5 volt C LR14/AM-2 batteries (baby cells). (Batteries not included!).


Detail view adjustable battery gripfre_batgriff_detail

The adjustable battery grip gives you the option of adjusting the brightness of the goggles to each patient by gently turning the switch.       



Replacement lamp Type 507fre_elampe

The Nystagmus Spectacle Type 523 can be operated with a 4 Volt; 0.23 Ampere; 1 Watt replacement lamp. (Thread diameter: 3.5 x 0.35mm).      



Replacement cover Type 57.20.02ble_abdeckung

The cover ensures the shielding of the light bulb and guarantee an indirect illumination of the Nystagmus Spectacle.   download: prospectus Nystagmus Spectacles by Dr. Blessing (PDF file 1,4 MB)