Maneuver to aid diagnosis of orbital varix by computed tomography.

The congenital orbital varix is a form of venous malformation of the orbit resulting in intermittent proptosis in a child, adolescent, or young adult [1, 2]. Vision is seldom affected, although attempts at surgical removal may alter vision [3]. Skull films may demonstrate orbital enlargement or phleboliths within the orbit [4]. Orbital venography and carotid angiography have previously proved useful in the study of vascular abnormalities of the orbit [5-8]. More recently , computed tomography (CT) has been used to further differentiate vascular lesions [9, 10]. We describe a simple CT technique to help demonstrate that an orb ital mass is a vari x.