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Trochlear nerve paresis and contralateral inferior oblique paresis Masato Hashimoto 1 , Toshiaki Kii 1 , Hiroshi Maekawa 1 , Tohru Umemoto 1 , Masahiro Ohba 1 , Takashi Nakagawa 1 1Dept of Ophthalmol, Sapporo Med Coll pp.1469-1472
Published Date 1993/8/15
DOI https://doi.org/10.11477/mf.1410901799
  • Abstract
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We observed two cases of congenital trochlear nerve paresis accompanied with contralateral infe-rior oblique paresis. Measurements in the cardinal positions showed both incyclodeviation and excy-clodeviation. We diagnosed these cases as the com-plex of trochlear nerve paresis and contralateral inferior oblique paresis. The lesion responsible for these paresis was thought to be at the level oftrochlear nucleus and the subnucleus for inferior oblique in the oculomotor nuclear complex, as they are closely located in the ventral aspect of central graymatter surrounding aqueductus mesencephali.These nuclei might be involved at the embryonal stage. Isolated trochlear nerve paresis suggests little information regarding site of involvement, whereas combined presence of contralateral infe-rior oblique paresis suggests that the lesion is locat-ed at the level of trochlear nucleus.


Copyright © 1993, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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