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PubMed · 10771238

Hearing loss and phacoemulsification.

R D Ten Hulzen·J C Erie·D A Fabry
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Abstract

PURPOSE: To determine the acoustic spectra of currently used phacoemulsification units and to contrast phacoemulsification-generated acoustic spectra with representative audiograms of common types of sensorineural hearing loss. SETTING: Mayo Clinic, Rochester, Minnesota, USA. METHODS: The acoustic spectra of 3 phacoemulsification systems (Alcon Series 20,000 Legacy, Storz Millennium, and AMO Diplomax) were recorded in an acoustically soundproofed room using a Roland VS-880 Digital Studio Workstation and analyzed with a Hewlett-Packard 35660A Dynamic Signal Analyzer. RESULTS: Phacoemulsification handpiece-generated harmonic overtones produced during ultrasound mode (6.0, 12.0, and 18.8 kHz for the 20,000 Legacy and Diplomax; 7.0 and 14.2 kHz for the Millennium) were outside the range of minimal decibel loss in individuals with hearing loss. Supplemental, low-frequency, console-generated tones produced during ultrasound mode (0.4 to 2.0 kHz for the Diplomax; 0. 1 to 1.5 kHz for the Millennium) were within the range of minimal decibel loss in individuals with hearing loss. CONCLUSION: Phacoemulsification systems with console-generated, low-frequency tones were audible to ophthalmologists with common types of sensorineural hearing loss.

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AudiometryHearing Loss, SensorineuralHumansPhacoemulsificationSound SpectrographyTreatment OutcomeVisual AcuityComparative StudyJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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R D Ten Hulzen, J C Erie, D A Fabry. 2000. Hearing loss and phacoemulsification.. https://doi.org/10.1016/s0886-3350(99)00405-8

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