Computerized tomography in the diagnosis of the congenital fibrosis syndrome

A patient with congenital ptosis and inferior rectus fibrosis is described. Marked atrophy of the left inferior rectus muscle was demonstrated by orbital computerized tomography (CT). Computerized tomographic findings in this patient and a series of 20 patients with no ocular disease and normal motility indicate that CT is a valuable tool for the evaluation of extraocular muscle size when qualitative comparison is made between corresponding muscles in the same patient.