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KMID : 0360220140550091406
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Journal of the Korean Ophthalmological Society
2014 Volume.55 No. 9 p.1406 ~ p.1411
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Internal Carotid Artery Aneurysm Presenting with Unilateral Nasal Hemianopsia
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Kim Kyoung-Nam
Kim Chang-Sik
Lee Yeon-Hee
Lee Sung-Bok
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Abstract
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Purpose: To report a case of unilateral nasal hemianopsia caused by a large internal carotid artery aneurysm.
Case summary: A 56-year-old female presented with large cupping in the left optic nerve head detected incidentally during a routine check-up. She had no underlying systemic disease except hypertension. The best corrected visual acuity was 20/20 in both eyes and a slit-lamp examination showed no abnormal findings. Ophthalmoscopy showed cup/disc ratios of 0.6 in the right eye and 0.75 in the left eye. Relative afferent papillary defect or color vision defect was not observed. A Humphrey visual-field test indicated unilateral nasal hemianopsia in the left eye. Brain CT and angiography revealed a large 2.2-cm aneurysm on the left internal carotid artery.
Conclusions: Internal carotid artery aneurysm should be considered as a possible cause of unilateral nasal hemianopsia in patients without intraocular lesion.
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KEYWORD
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Glaucoma suspect, Internal carotid artery aneurysm, Optic disc cupping, Relative afferent pupillary defect, Unilateral nasal hemianopsia
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