We must understand eye movements to help us identify the cause(s) of someone’s dizziness or balance problems. Nystagmus is the cardinal sign for peripheral and central vestibular dysfunction. We know there is much more to cover about nystagmus – from more complex cases to the different types of nystagmus associated with BPPV. We are constantly learning more!

To evaluate patients with dizziness effectively, you will need equipment, such as Frenzel glasses or video goggles, to evaluate nystagmus without fixation. As the infamous Dr. Halmagyi (2020) stated, “Examining a dizzy patient without using nystagmus glasses is like examining a weak patient without a tendon hammer.”

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Frenzel Nystagmus Spectacles

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Interacoustics

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JEDMED

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Difra Instrumentation

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Vestibular First

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Nagashima

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US Neurological

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M-glasses

Note: This list does not list all manufacturers.

For a review of the benefits of using Frenzel glasses or goggles, refer to the Halmaygi et al. (2020) article provided by clicking here.

To review various Frenzel glasses and goggles, including DIY instructions, visit Dr. Hain’s website.

To purchase M-glasses, it is recommended to email Michael Strupp, M.D.