Internal Carotid Artery Aneurysm Presenting with Unilateral Nasal Hemianopsia.

Kim, Kyoung Nam; Kim, Chang Sik; Lee, Yeon Hee; Lee, Sung Bok

doi:2014.55.9.1406

J Korean Ophthalmol Soc > Volume 55(9); 2014 > Article

Case Report

Journal of the Korean Ophthalmological Society 2014;55(9):1406-1411.
DOI: https://doi.org/10.3341/jkos.2014.55.9.1406 Published online September 15, 2014.

Internal Carotid Artery Aneurysm Presenting with Unilateral Nasal Hemianopsia.

Kyoung Nam Kim, Chang Sik Kim, Yeon Hee Lee, Sung Bok Lee

Department of Ophthalmology, Chungnam National University School of Medicine, Daejeon, Korea. sblee@cnu.ac.kr

단안의 비측 반맹으로 발현된 내경동맥류

김경남⋅김창식⋅이연희⋅이성복

Department of Ophthalmology, Chungnam National University School of Medicine, Daejeon, Korea

Abstract

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.

Key Words: Glaucoma suspect;Internal carotid artery aneurysm;Optic disc cupping;Relative afferent pupillary defect;Unilateral nasal hemianopsia