A manual of diseases of the nose and throat . any cavity the instru-ment may be placed. An individual who has the sightof but one eye has learned to judge distance from longexperience, but he who has the sight of both eyes hasmore difficulty in appreciating distances with the useof but one eye. The examination of the nasal cavities should be madefrom in front, which is called anterior rhinoscopy, andalso from behind, posterior rhinoscopy. 44 EXAMINATION OF UPPER RESPIRATORY TRACT. ANTERIOR RHINOSCOPY. Although one cannot inspect the structures deepwithin the nasal cavities without dilating the
A manual of diseases of the nose and throat . any cavity the instru-ment may be placed. An individual who has the sightof but one eye has learned to judge distance from longexperience, but he who has the sight of both eyes hasmore difficulty in appreciating distances with the useof but one eye. The examination of the nasal cavities should be madefrom in front, which is called anterior rhinoscopy, andalso from behind, posterior rhinoscopy. 44 EXAMINATION OF UPPER RESPIRATORY TRACT. ANTERIOR RHINOSCOPY. Although one cannot inspect the structures deepwithin the nasal cavities without dilating the nostrilwith some sort of nasal speculum, yet very valuableinformation can be gained as to the position, shape,and width of the nasal orifices, columnar cartilage,deviations of the septum, and spurs situated anteriorlywithout the use of a speculum, either by simple in-spection or by tilting upward the tip of the nose. SPECULUM. There are many forms of specula used to dilate theanterior nasal orifice, and it becomes a matter of habit Fig. Bos-worths nasal speculum. with each individual examiner as to the kind of specu-lum that he will use. The small wTire speculum ofBosworth (Fig. 8) is a very convenient form, and servesadmirably the purpose of dilating the nostrils of chil-dren. It is not a formidable looking instrument, anddoes not frighten them as much as some of the largerinstruments. It has one drawback. In the examina-tion of the nares of adults, where the vestibule is thicklystudded with hairs, these are not adequately pushed SPECULUM. 45 aside, and the view of the deeper structures may besomewhat obscured by their lying in the line of vision. This speculum should be held with the thumb andforefinger placed upon the two enlargements foundabout half-way along the handle, the blades broughtinto apposition and inserted within the nostril, oneblade looking toward the septum and the other towardthe outer wall of the nose. The instrument should beheld so as to make an angle
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherne, booksubjectnose
