A text-book of the diseases of the ear for students and practitioners . Fig. 68.—Wildes Speculum. Fig. 64.—EhrhardsSpeculum. Fig. 65.—The AuthorsVulcanite Speculum. In operations where both hands are required for manipulation,the mirror is fixed to the head by Semeleders head-band, towhich it is fastened by means of a ball-and-socket joint in frontof the eye of the observer. Each mirror is so constructed thatit can be used with a handle as well as with a head-band. Theauthor uses in his practice a mirror fixed to the head by a strongsemicircular band of steel, tightly applied to the forehead,
A text-book of the diseases of the ear for students and practitioners . Fig. 68.—Wildes Speculum. Fig. 64.—EhrhardsSpeculum. Fig. 65.—The AuthorsVulcanite Speculum. In operations where both hands are required for manipulation,the mirror is fixed to the head by Semeleders head-band, towhich it is fastened by means of a ball-and-socket joint in frontof the eye of the observer. Each mirror is so constructed thatit can be used with a handle as well as with a head-band. Theauthor uses in his practice a mirror fixed to the head by a strongsemicircular band of steel, tightly applied to the forehead, vertex,and occiput (Scott Bishop). Schwartze and Trautmann do notuse any special fixation apparatus while operating, but direct themirror with the thumb of the left hand, to which it is fastenedby a movable ring. Bossi and Berthold recommend binocularotoscopy. Befractive anomalies of the eye necessitate the application of correctivelenses to obtain a distinct view of the membrana tympani. Emmetropicindividuals or those myopic to a slight degree do not require c
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectear, booksubjecteardi
