A Case of Micropsia in Bioccipital infarction Following Coronary Angiography.
- Author:
Joong Taek CHUNG
1
;
Hyun Jeong HAN
;
Moon Ku HAN
;
Sang Soo LEE
;
Seol Heui HAN
Author Information
1. Department of Neurology, Chungbuk National University College of Medicine, Korea.
- Publication Type:Brief Communication
- MeSH:
Ants;
Blindness, Cortical;
Brain;
Cerebral Infarction;
Coronary Angiography*;
Fingers;
Hand;
Humans;
Illusions;
Infarction*;
Infarction, Posterior Cerebral Artery;
Male;
Middle Aged;
Occipital Lobe;
Perfusion;
Retinal Diseases;
Tomography, Emission-Computed, Single-Photon;
Vision Disorders*;
Visual Acuity
- From:Journal of the Korean Neurological Association
1995;13(2):371-374
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Metamorphopsia of different types have been noted in patients with posterior cerebral artery infarction, especially when the lesion is bilateral or occipitotemporal. Micropsia (objects appearing reduced in size) is commonly due to retinal disease, which causes displacement of the receptor cells. It can be hysterical in origin, but rarely micropsia is accompanied by occipitotemporal lesion. We present here a case of micropsia due to bilateral occipital infarction after coronary angiography (CAG). A 55 year-old male had experienced cortical blindness due to cerebral infarction following CAG. Brain CT reveals poorly defined low density lesions in bilateral occipital cortices. Brain SPECT shows perfusion defect in both occipital lobes with markedly decreased perfusion in left temporal area. Two weeks later, as he regains visual acuity, he complains of micropsia, I.e., his hands and fingers look small and the people outside the window looks very small like ants. This perverted visual illusion lasts about 15 days.
