Of the following hearing aids, which interferes the most with wearing eyeglasses and using a phone?
a. In-the-canal hearing aid
b. In- the-ear hearing aid
c. Behind-the-ear hearing aid
d. They are all equally useful.
ANS: C
The behind-the-ear aid hooks around and behind the ear and is connected by a short, clear, hollow plastic tube to an ear mold inserted into the external auditory canal. It is useful for patients with rapidly progressive hearing loss or manual dexterity difficulties, but it is more visible and interferes with wearing eyeglasses and using a phone. An in-the-canal aid is the newest, smallest, and least visible and fits entirely in the ear canal. It does not interfere with wearing eyeglasses or using the telephone, but it does not accommodate progressive hearing loss and requires manual dexterity to operate. An in-the-ear aid does not interfere with wearing of eyeglasses or phone usage, but it is more noticeable than the in-the-canal aid and is not useful for persons with skin problems in the ear canal.
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