Optic nerve coloboma (morning glory syndrome): CT findings

This study demonstrates computed tomographic (CT) findings of morning glory syndrome. CT examination of the orbits was performed in three patients. Images of 2-mm-thick sections were acquired at 2-mm intervals without use of contrast material. Excellent demonstration of coloboma was achieved in each case. Because both magnetic resonance imaging and ultrasonography have limitations in imaging of coloboma, CT is the imaging method of choice in diagnosis of this disorder.