A Case of Junctional Scotoma Caused by Idiopathic Optic Chiasmitis at the Macular Fiber Chiasm

DOI
  • Tamura Chinami
    Department of Ophthalmology, Faculty of Medicine, University of Miyazaki
  • Nagatomo Saori
    Department of Ophthalmology, Faculty of Medicine, University of Miyazaki
  • Chuman Hideki
    Department of Ophthalmology, Faculty of Medicine, University of Miyazaki
  • Ikeda Yasuhiro
    Department of Ophthalmology, Faculty of Medicine, University of Miyazaki

Bibliographic Information

Other Title
  • 視交叉内の黄斑線維走行部に限局する 接合部障害と思われた特発性視交叉炎の一例

Abstract

<p>　A 37-year-old man experienced blurry vision in his left eye. His corrected visual acuity was 1.2 OD and 0.6 OS. The relative afferent pupillary defect was negative. Humphrey visual field test indicated bitemporal hemianopia within 10º of visual field and diminished sensitivity in the central nasal field of the left eye. Brain gadolinium-enhanced magnetic resonance imaging (MRI) revealed an enhanced small lesion slightly to the left posterior part within the center of the optic chiasma. The patientʼs visual acuity recovered to 1.0 without treatment, and his visual field defect disappeared. A repeated brain MRI showed no enhanced lesion in the optic chiasma. We speculate that this patient had inflammation, specifically of the crossed macular fibers and uncrossed fibers towards the left of the chiasma. Consequently, this case supports the anatomical evidence indicating the existence of macular fiber chiasma within the optic chiasm. Moreover, such cases could be misdiagnosed as a nonorganized visual disturbance, especially without appropriate selection of the visual field program.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390016128781764352
  • DOI
    10.11476/shinkeiganka.40.248
  • ISSN
    21882002
    02897024
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

Report a problem

Back to top