Frenzel Glasses

FRENZEL GLASSES

• Frenzel glasses are a diagnostic tool used for the medical evaluation of nystagmus(peripheral vestibular nystagmus).
• They are named after Frenzel, a German physician.

PURPOSE OF FRENZEL GLASSES

• To disable the patient’s ability to visually fixate on an object which will suppress the Nystagmus
• Allowing the examiner to adequately visualize the eye.
• This is done by using high-powered (+20 diopters) magnifying glasses with an illumination system.

TYPES OF FRENZEL GLASSES

• There are two types of Frenzel glasses — optical and video.
• The Video Frenzel Glasses are far preferable, but they are more costlier.
• The Optical Frenzel Glasses are portable and less costly.

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