【完全ガイド】補聴器って何歳から？専門医が教える選び方

🦻 「まだ大丈夫」が一番もったいない

「家族にテレビの音が大きいと言われる」「会話が聞き返しになることが増えた」──そんな変化を感じながらも、「年齢のせいだから仕方ない」「補聴器はまだ早い」と感じていませんか？

難聴を長く放置することには、聞こえ以外のリスクもあります。前向きコホート研究では、中等度〜重度の難聴は正常聴力に比べて認知症発症リスクが約1.6倍になることが示されており^[1]、Lancetの認知症予防委員会は「難聴は認知症の最大の可変的リスク因子」と位置づけています^[2]。今回は、補聴器について耳鼻科医がよく聞かれる疑問にお答えします。

🟢 補聴器はどんな人に必要？

補聴器が必要かどうかは、「聞こえにくさが日常生活にどれだけ影響しているか」で考えます。

以下のような状況が続くようであれば、一度耳鼻科での聴力検査をお勧めします。

テレビのボリュームを人より大きくしないと聞こえない
会話の中で聞き返すことが増えた
静かな場所ならわかるが、騒がしいところだと聞き取れない
電話での通話が聞こえにくい
「何を言っているかわかるけど、何となく聞き取りにくい」という感覚がある

難聴は自覚しにくいことが多く、ご家族が先に気づくケースもよくあります。

🟢 補聴器をつけると、本当に聞こえがよくなる？

補聴器は音を増幅する機器ですが、単に「大きくするだけ」ではありません。現代の補聴器は人工知能（AI）を搭載したものも多く、周囲の騒音と聞きたい音声を自動で区別して処理します。

ただし、補聴器は眼鏡と違い、最初からすぐに快適に聞こえるわけではありません。ランダム化比較試験では、新規装用者が騒音下での語音聴取成績を改善させるまでに約4週間の慣れ（順応）期間が必要であることが示されています^[3]。使い始めて「うるさい」「違和感がある」と感じるのはよくあることで、調整を重ねることが大切です。

当院では、認定補聴器技能者と連携して、丁寧なフィッティングを行っています。

🟢 補聴器の選び方──形の種類

補聴器にはいくつかの形があります。それぞれ特徴があり、聞こえの程度や生活スタイルによって最適なものが異なります。

耳かけ型（RIC型）
現在最も主流のタイプ。耳の後ろに本体、耳の穴には小さなスピーカーのみを入れる構造で、目立ちにくく音質も良好です。

耳あな型
耳の穴にすっぽり収まるタイプ。目立ちにくいメリットがある一方、ハウリングを起こしやすい。筐体が小さいため、耳かけ型に比べて出力や性能の面では同価格帯であれば劣ります。またご高齢になると小さな筐体の取り扱いが難しくなる点にも注意が必要です。軽度〜中等度の難聴に適しています。

ポケット型
本体をポケットに入れてコードでイヤホンにつなぐタイプ。操作が簡単なため、機械操作が苦手な方や高齢の方に向いています。また箱本体を相手に近づけることで、聞きたい音をより明瞭に大きく聞くことができるというメリットもあります。

どの形が合うかは、聴力の程度・耳の形・手先の器用さ・生活環境などを踏まえて一緒に決めていきます。まずは診察・聴力検査からお気軽にご相談ください。

🟢 補聴器は保険が使える？費用はどのくらい？

保険診療の費用：聴力検査・補聴器適合検査には保険が適用されます（自己負担3割で数百〜千円程度）。

補聴器本体：補聴器本体は原則として保険適用外です（医師の診断書があれば身体障害者手帳の申請が可能な場合があります）。医療機器として認証を受けた補聴器の価格は、軽度難聴向けで10万円台、中等度〜重度向けで20〜30万円程度が目安です。

自治体の助成制度：岡山市では身体障害者手帳（聴覚障害）をお持ちの方への補聴器購入補助があります。まずは診察で聴力の程度を確認し、対象となるかどうかをご説明します。

🟢 当院での補聴器外来の流れ

聴力検査：どの程度の難聴かを正確に把握します
補聴器適合検査：補聴器を使ったときにどのくらい改善するかを測定します
補聴器の試聴・選定：認定補聴器技能者と連携して最適な機種を提案します
フィッティング・調整：使い始めてからの細かな調整を丁寧に行います
定期フォロー：装用状況の確認と継続サポート

最後に

「補聴器はまだ早い」と思っていても、早めの相談が結果的に一番お得です。聞こえの悩みは遠慮なくご相談ください。当院では、検査から補聴器選定・フィッティングまで一貫してサポートします。

まずは聴力検査からどうぞ。岡山市東区西大寺エリアの耳鼻科として、地域の皆様の「きこえ」を全力でサポートします。

参考文献

Deal JA, Betz J, Yaffe K, et al. Hearing Impairment and Incident Dementia and Cognitive Decline in Older Adults: The Health ABC Study. J Gerontol A Biol Sci Med Sci. 2017;72(5):703-709. PMID: 27071780：「中等度〜重度難聴は正常聴力と比べて認知症発症リスク約1.6倍（HR 1.55, 95%CI 1.10–2.19）」
Livingston G, Huntley J, Sommerlad A, et al. Dementia prevention, intervention, and care: 2020 report of the Lancet Commission. Lancet. 2020;396(10248):413-446. PMID: 32738937：「難聴は認知症の最大の可変的リスク因子」
Wright D, Gagné JP. Acclimatization to Hearing Aids by Older Adults. Ear Hear. 2021;42(1):193-205. PMID: 32769437：「新規装用者が騒音下での語音聴取成績を改善するまでに約4週間の順応期間が必要」（RCT）

About Our Clinic

Located in the east side of Okayama, our ENT clinic provides advanced and compassionate care for patients of all ages. We specialize in ear, nose, and throat disorders, including endoscopic ear surgery, sinus treatment, hearing loss, and head and neck conditions. Led by Deputy Director Dr. Ryotaro Omichi, who brings academic hospital experience and international research expertise, we offer personalized, evidence-based care in both Japanese and English. Whether you are a resident or visiting from abroad, we are committed to making your experience comfortable, transparent, and effective.

Message from the Vice Chairperson

Welcome
My name is Dr. Ryotaro Omichi, and I’m an ear, nose, and throat (ENT) specialist based in Okayama, Japan. I currently serve as the Deputy Director of this clinic, bringing with me extensive experience from my previous role as an Assistant Professor in the Department of Otolaryngology–Head and Neck Surgery at Okayama University Hospital, where I provided advanced care and helped train the next generation of ENT surgeons. 

My clinical focus is minimally invasive ear surgery, especially transcanal endoscopic ear surgery (TEES)—a technique that uses a small endoscope inserted through the ear canal to treat chronic infections, cholesteatoma, or repair eardrum perforations. I played a leading role in introducing and developing this approach at Okayama University Hospital, making ear surgery safer, less painful, and faster to recover from. In addition to ear surgery, I regularly performed endoscopic sinus surgeries and head and neck cancer surgeries.  I also specialize in genetic counseling for hereditary hearing loss and facial nerve disorders, offering advanced care supported by the latest medical research. 

From 2018 to 2020, I completed postdoctoral research training at the University of Iowa in the United States, where I worked on gene therapy for hearing loss. My time in the U.S. helped me understand American patient expectations—clear communication, transparency, and respect for personal choices. I speak English and am happy to consult directly with international patients.  Whether you are a resident in Japan, a traveler, or an expat seeking high-quality ENT care, I aim to make your visit comfortable and informative. My mission is to treat not just the disease, but the whole person—with care that is compassionate, evidence-based, and tailored to your unique needs.  If you have any questions or would like to book a consultation, please don’t hesitate to reach out. I look forward to supporting your health and well-being. 

Ryotaro Omichi, M.D., Ph.D. 
Deputy Director of Omichi ENT Clinic  ENT Surgeon / Ear & Sinus Specialist

Our clinic is led by Dr. Takuya Omichi, who played a key role in introducing cochlear implant treatment at Okayama University and has contributed greatly to pediatric hearing loss care. He completed a clinical fellowship at the University of Toronto and has dedicated his career to comprehensive care in the field of otolaryngology, with a particular focus on ear disorders. With a strong commitment to community-based medicine, Dr. Omichi founded Omichi ENT Clinic to provide advanced, compassionate care for both children and adults in the Okayama region. 

Notes

Reservations

Introducing the "Digisuma" Smart Clinic System – Starting August 2025  

To improve your experience and support sustainable medical practices aligned with the SDGs, our clinic will introduce the “Digisuma” smart clinic system, developed by M3, Inc., starting in August 2025.  

With this new system, your smartphone will serve as your digital patient ID card, and payments can be completed seamlessly through the app. This allows for a smoother, faster visit—from check-in to check-out—without the need to wait at the reception after your consultation.  

Before your visit, we kindly ask that you download the “Digisuma Clinic” app and complete the registration process. By entering your credit card information in the app, payment will be processed automatically after your appointment, allowing you to leave the clinic without delay.  

If you are unsure how to download or set up the app, our staff will be happy to assist you at the front desk.  

Please note: In line with our efforts to reduce paper use and improve efficiency, paper patient ID cards will be phased out. If you do not have a smartphone or are unable to use the app, a paper card can be issued for an additional fee (actual cost). Thank you for your understanding.  

We appreciate your cooperation as we work to provide a more comfortable and environmentally conscious clinic experience.

Pre-consultation interview

Please Complete the Online Medical Questionnaire Before Your Visit  

To help us provide you with efficient and personalized care, we kindly ask that you complete the online medical questionnaire (Web Monshin) before your visit, using either the app or our clinic’s website. 

Please select the questionnaire that best matches your main symptoms and fill it out as thoroughly as possible. By submitting this form in advance, our doctors can review your condition ahead of time and make the most of your consultation. This also helps reduce your time spent at the clinic and shortens overall waiting times.  

If You Are Unable to Complete the Questionnaire in Advance  

If the online questionnaire is not submitted before your appointment, your consultation order may be delayed. You will be asked to fill out the form upon arrival, which may result in a longer wait time.  

If you have difficulty accessing or completing the form at home, our staff will be happy to assist you when you arrive at the clinic. Please don’t hesitate to let us know—we’re here to help.

Specialist clinic

Specialty Clinics by Time Slot Reservation  

For our Fever Clinic, Hearing Loss Clinic, and Dizziness Clinic, we operate on a time-slot reservation system to ensure personalized and attentive care for each patient.  

Please book your preferred time slot through our website. Patients will be seen in order during the selected time frame.  

If the specialty clinic time slots are fully booked but you are experiencing symptoms such as hearing loss or dizziness, we can still see you during our general outpatient hours, which follow a queue-based reservation system. In that case, please let us know when making your appointment or include this information in your online questionnaire.  

Please note that depending on the condition and urgency of other patients, the order of consultation may change.  

We appreciate your understanding and cooperation.

For patients without Japanese health insurance

Thank you for choosing our clinic. We welcome patients from around the world and are committed to providing safe, high-quality medical care in a comfortable and respectful environment. 

 For patients who do not have Japanese public health insurance, please note that medical fees will be calculated at three times the standard rate set by the national health insurance system in Japan. This adjustment is necessary to account for the full cost of providing care, including consultation time, administrative support, translation if needed, and the preparation of medical documents.  

This pricing is in line with common practice among medical institutions in Japan that serve international patients. We will always provide a clear explanation of fees in advance, and we are happy to answer any questions you may have before or after your visit.  

We appreciate your understanding and cooperation. Our goal is to make your experience with us as smooth and reassuring as possible.  

If you have any concerns, please don’t hesitate to ask our staff.