Computed tomography of the orbit.

Computerized tomography (CT) has revolutionized the analysis of patients with orbital tumors. A new CT scanner devised by the author resolves structures less than 1 mm with an image section as thin as 2 mm. This improved resolution shows all the extraocular muscles, including the obliques; enlargement of the optic nerve to the orbital end of the optic canal; and the sclera, crystalline lens, aqueous, and vitreous. Experience with 700 orbital studies shows that CT scanning now identifies pathologic changes in the orbital soft tissues with the same diagnostic accuracy as bone pathology.