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CASE REPORT
Year : 2012  |  Volume : 2  |  Issue : 2  |  Page : 68-72

Chiasmal optic neuritis: A report of three cases


1 Department of Ophthalmology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
2 Department of Ophthalmology, Taipei Veterans General Hospital; School of Medicine, National Yang-Ming University; Institute of Neuroscience, National Yang-Ming University, Taiwan
3 Department of Ophthalmology, Taipei Veterans General Hospital; School of Medicine, National Yang-Ming University, Taipei 11217, Taiwan

Correspondence Address:
May-Yung Yen
Department of Ophthalmology, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Taipei 11217
Taiwan
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Source of Support: None, Conflict of Interest: None


DOI: 10.1016/j.tjo.2011.12.002

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Chiasmal optic neuritis (ON), a rare condition that affects the optic chiasm, is mostly associated with inflammatory demyelinating disorders and may be the initial manifestation of multiple sclerosis (MS). Here, we reported three cases of MS with chiasmal optic neuritis. The clinical manifestations, neuro-imaging results, and visual prognosis were evaluated in each patient. Routine eye examinations and auxiliary examinations, including Ishihara color plate, determination of the visual field (VF), and magnetic resonance imaging (MRI) of the optic nerve and chiasm, were performed. All patients presented with reduced VA and VF defects. The abnormal enhancement of the optic chiasm was clearly demonstrated on MRI. Two patients recovered after the systemic administration of steroids, but the other patient only partially recovered. In conclusion, although it is rare, chiasmal ON should be considered in patients who develop bitemporal hemianopia. MRI is the modality of choice for accurate diagnosis. Early diagnosis and proper treatment are mandatory for the restoration of restore visual function.


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