File:Medical and surgical therapy (1918) (14773032352).jpg

Identifier: medicalsurgicalt03good (find matches)
Title: Medical and surgical therapy
Year: 1918 (1910s)
Authors: Goodwin, T. H. (Thomas Herbert), b. 1871, ed Keogh, Alfred, Sir, 1857-1936, ed
Subjects: Medicine, Military Military Medicine Surgery
Publisher: New York : D. Appleton
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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Text Appearing Before Image:
Fig. 26.—Type of occipital wound with quadrantic hemiopia. Inferior quadrantic hemiopia is caused by a directwound of the external table of the occipital boneabove the protuberance, beyond which the depressionof the bone does not pass. Indirect wounds appearmore frequently to give rise to superior quadrantichemiopia. In all cases of this variety observed bythe writer the site of the wound had been behind theear, and quite close to the base of the mastoid process ;the missile, travelling very obliquely backwards, has WOUNDS OF THE OCCIPITAL LOBE C,\K> followed the inferior aspect of the occipital lobe, andhas been arrested near the median line. This variety
Text Appearing After Image:
Fig. 27.—The wound of the skull. Fig. 28.-- Kadiograph of the skull inprofile showing loss of bone. Heniiopia in the hft inferiiyr. quadrant. of lesion of the visual centre must be methodicallylooked for in every patient who has a wound in thisposition, because, in such cases, the disorder of visionis nearly always unperctived. But inferior quadrantic 696 VOUNDS OF THE BRAIN hemiopia is the most common variety, the blind areain the field often reaching the fixation point, andit is sometimes complicated by hemiachromatopiain the homonymous superior quadrant. In the casesobserved by the writer the limits of the defect ofvision have continued unchanged after several months.The site of the wound, its direction, and the radio-graphic localisation of the missile (if it is still present)all show that the injury is confined to one portiononly, either superior or inferior according to the case.Sometimes, instead of the wound being limitedentirely to one lip of the calcarine fissure it will h

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