アンケート調査による網膜色素変性症と難聴・耳鳴の頻度 [in Japanese] Prevalence of hearing loss in retinitis pigmentosa [in Japanese]
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The prevalence of hearing loss, progressive hearing loss, tinnitus and dizziness, and age at onset of hearing loss were evaluated by questionnaire in subjects who were registered members of the Japanese Retinitis Pigmentosa Society (n=3200) in the year 2002. 834 questionnaires were returned (26.1% response rate), but 828 subjects (25.9%) who had been diagnosed of Retinitis Pigmentosa (RP) by the ophthalmologists were included in the analysis. The prevalence of cochlear symptoms (hearing loss: 29.5%, tinnitus: 30.4%) was 43.0%(n=356). Of 356 subjects with cochlear symptoms, progressive hearing loss and dizziness were 44.9% and 56.5%, respectively. The mean ages at onset of hearing loss and visual loss were 39.2 years old and 31.7 years old, respectively. 63.5% of the subjects with cochlear symptoms had a history of audiometric examination, and 22.1% of the subjects with hearing loss (n=244) used a hearing aid. Overall, the rate of occurrence of cochlear symptoms was calculated as 7.2 per 100, 000 in the general population (where subjects with an age at onset of cochlear symptoms of 61 or older were excluded from the calculation).
- Ear Research Japan
Ear Research Japan 16(1), 37-41, 2006-02-25
THE JAPAN OTOLOGICAL SOCIETY