Abstract
A and B-Scan echography, CT scanning and pathological studies have clearly shown that the extraocular muscles are the primary focus in orbital Graves’ disease. The presence of optic neuropathy is probably secondary to apical orbital compression by congested muscles. At present the Standardized A-Scan echography is a reliable method for precise biometrical estimation of the thickness of the optic nerve. The purpose of this work is to evaluate the diameter of the optic nerve in patients with Graves’ disease in relation to the involvement of this structure in this disease.The results show that the optic nerve can be affected in Graves’ disease already in the very first stage of the disease. There is moreover a discrepancy between the thickening of the optic nerve and the progression of Graves’ disease.A hypothesis is given to explain these data.
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