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pp.741-744
Published Date 1960/9/20
DOI https://doi.org/10.11477/mf.1492202521

In order to establish a basis upon which the use of hearing aids may be rested, hearing tests in 84 cases of hard of hearing, that lasted for various period of duration from 1 month to several years in which the aids were used, were made. These cases consisted of 40 cases of nerve deafness, 24 of mixed deafness and 20 of conduction deafness. The point whether the aids were used on the good or bad ear was also noted.

From this study the author comes to a conclusion that the hearing aid when needed should be used on the good ear of the two : but, when both ears are alike in the degree of deafness the aid may be used in either ear.


Copyright © 1960, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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