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Objective Tinnitus and the Tensor Tympani Muscle
The International Tinnitus Journal
|January 1, 1995
Summary
Forceful Eyelid Closure Syndrome (FECS) causes objective tinnitus (OT) through tensor tympani muscle (TTM) contraction. This syndrome is linked to hearing loss, tympanic membrane changes, and impedance audiometry findings.
Area of Science:
- Otolaryngology
- Audiology
- Physiology
Background:
- Objective tinnitus (OT) can result from tensor tympani muscle (TTM) contractions.
- Forceful eyelid closure can trigger TTM contraction and subsequent OT.
Purpose of the Study:
- To describe the characteristics of Forceful Eyelid Closure Syndrome (FECS).
- To investigate the relationship between eyelid closure, TTM activity, and auditory findings.
Main Methods:
- Clinical observation and case reporting of FECS.
- Otomicrosopic examination of the tympanic membrane (TM).
- Impedance audiometry to assess middle ear function.
Main Results:
- FECS is characterized by objective tinnitus, hearing loss (primarily low frequencies), TM retraction (25%), and increased impedance (75%).
- Some patients showed no response to otoscopy or impedance testing.
Conclusions:
- Forceful Eyelid Closure Syndrome is a distinct entity with specific audiological and otoscopic findings.
- The TTM plays a significant role in the generation of objective tinnitus associated with forceful eyelid closure.