File:A treatise on the principles and practice of medicine (1916) (14780170894).jpg

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Identifier: treatiseonpri00edwa (find matches)
Title: A treatise on the principles and practice of medicine
Year: 1916 (1910s)
Authors: Edwards, Arthur Robin, 1867-
Subjects:
Publisher: Philadelphia : Lea & Febiger
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ain after partial recovery. Heteronymoushemianopsia designates blindness of the right half of one field and theleft half of the other or the converse. Disease in the gray ganglia orinternal capsule may produce contralateral hemiplegia; in 50 per cent,of cases of hemianopsia this association is observed, and less frequentlyhemianesthesia. The optic tract is injured in tumors, multiple sclerosis,trauma, hemorrhage or softening. 5. Optic Centre (See page 753).—A lesion in the cuneus produces (a)homonymous hemianopsia. Sometimes only an upper or lower quadrantis blind. Purely cortical hemianopsia is impossible, Monakow holdingthat the optic radiation must be involved; (b) hemichromatopsia, orhomonymous color-blindness or confusion, in which all colors seem gray,is probably due to lesion of the anterior superficial cuneal cortex. Otherresults are (c) mind-blindness; (d) alexia; (e) optic aphasia; and (/)crossed amblyopia, concentric blurring or limitation of the visual fields PLATE XXIII
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V/SUAV, r WSUAL ^ Visual Paths. (After Vialet.) OP.N., optic nerve. OP.C, optic chiasm; OP.T., optic tract; OP.R., optic radiation;F.S., visual speech centre. A lesion at (1) causes total blindness in that eye; lesionat (2), bitemporal hemianopsia; at (3), unilateral nasal, and lesions at (3) and (3A),bilateral nasal hemianopsia; at (4), hemianopsia of both eyes and the hemianopsic pupillaryreaction; at (5) or (6), hemianopsia of both eyes (pupillary reflexes being normal; at (7),amblyopia, especially of the opposite eye; at (8), word-blindness. OCULAR PARALYSIS; THIRD, FOURTH AND SIXTH NERVES 875 for form and color; this is usually referred, however, to disease of thegyrus angularis, in which there is thought to be a higher centre in whichthe half-fields are combined and the whole opposite field and part of thefield of the same side are represented. Diagnosis.—The eyes should be tested separately. Disease of anoptic nerve causes loss of sight and pupillary reaction in the correspon

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Author Edwards, Arthur Robin, 1867-
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Flickr tags
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  • bookid:treatiseonpri00edwa
  • bookyear:1916
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Edwards__Arthur_Robin__1867_
  • bookpublisher:Philadelphia___Lea___Febiger
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:934
  • bookcollection:library_of_congress
  • bookcollection:americana
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30 July 2014
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