ろう児の失官原因および聴力について
沖縄ろう学校生徒208名の調査結果
1968 年 14 巻 4 号 p. 256-263
詳細
1968 年 14 巻 4 号 p. 256-263
In 1967 the author investigated 208 children of Okinawa School for the Deaf with respect to the causes of deafness and audiometric aspects.
Two hundred and eight children consisted of 107 boys and 101 girls aged from 6 to 18 years.
Familiar deafness is an important pre-natal cause of deafness among them, and it was found in 41 families (22%). Consanguineous marriages of their parents amounted to 15 families (8%). There were three predominant diseases as post-natal causes of deafness, that is, febrile diseases suffered before the age of 2 years amounted to 38 children (18%), otitis media to 25 (12%) and measles to 24 (11.5%). One hundred and eighty-one children were subjected to hearing tests based on the standard audiometry. Hearing losses of the children were found to be more than 50 dB. Audiogram of the residual type was found in 90 children (50%) and total deafness Caudiogram of the scale-out type) in 19 (10.5%). In comparison with the hearing test results conducted in 1965, 46 children (25%) had progressive hearing impairments.
