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김경남,김창식,이연희,이성복.Kyoung Nam Kim. MD. Chang Sik Kim. MD. PhD. Yeon Hee Lee. MD. PhD. Sung Bok Lee. MD. PhD 대한안과학회 2014 대한안과학회지 Vol.55 No.9
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. J Korean Ophthalmol Soc 2014;55(9):1406-1411