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Leber's hereditary optic neuropathy without typical optic nerve findings Madona Tsukamoto 1 , Yasuhito Iijima 1 , Masaki Takeuchi 1 , Ryo Tsushima 1 , Asahi Tsukamoto 1 , Mamoru Tateishi 1 , Norihiro Yamada 1 , Tetsuro Tsubouchi 1 , Nobuhisa Mizuki 1 1Department of Ophthalmology and Visual Science, Yokohama City University pp.1233-1239
Published Date 2024/10/15
DOI https://doi.org/10.11477/mf.1410215297
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Abstract We presented the case of a 48-year-old man who presented with rapid vision loss in his left eye, prompting a visit to his previous doctor. Although the cause of his vision loss was unclear, he subsequently experienced a decline in vision in his right eye. Given the unclear etiology of his vision impairment, he was referred to our hospital for further evaluation. The patient had no family history of ocular disorders and had a smoking history spanning nearly three decades.

Upon initial examination, central flicker values were decreased in both eyes. However, fundus examination, blood tests, and head MRI revealed no discernible abnormalities. Fundus fluorescein angiography was contraindicated owing to a known contrast agent allergy. The clinical course suggested optic neuropathy;therefore, a genetic test targeting Leber's hereditary optic neuropathy(LHON)was undertaken, which subsequently identified a mutation in mitochondrial DNA 14484, leading to the definitive diagnosis of LHON.

While LHON is typically associated with observable ophthalmoscopic abnormalities of the optic nerve during the acute phase, in our patient from this pattern, as no such abnormalities were not consistently noted throughout the course of evaluation. This case suggests the importance of considering LHON as a potential etiology in cases of bilateral visual loss, even in the absence of characteristic fundus findings.


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

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