J Korean Neurol Assoc.  1995 Jun;13(2):371-374.

A Case of Micropsia in Bioccipital infarction Following Coronary Angiography

• Chung JT
• Han HJ
• Han MK
• Lee SS
• Han SH

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.

MeSH Terms

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