词条 | Frenzel goggles |
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UsageThe purpose of the goggles is to disable the patient's ability to visually fixate on an object while at the same time allowing the examiner to adequately visualize the eye. This is done by using high-powered (+20 diopters) magnifying glasses with an illumination system. With such a high-powered lens, it is unlikely that the patient can adequately focus and visually fixate on an object to suppress nystagmus. External links1. ^http://www.tchain.com/otoneurology/practice/frenzels.htm Frenzel goggles and related devices 1 : Ophthalmic equipment |
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