Computerized Axial Tomography is a noninvasive radiologic technique that gives definition to orbital structures that aids the ophthalmologist in his diagnosis and treatment. This outpatient study is painless, takes approximately thirty minutes, but does demand a very still patient. The globe, horizontal extraocular muscles, and optic nerve are well delineated which allows detection of retrobulbar abnormalities. Eleven examples of the sixty patients studied are presented demonstrating its value as the most informative test now available in orbital diagnosis.