Orbitonometry in Graves' Disease

ABSTRACT

In discussing the ocular changes in exophthalmos, the resistance of orbital tissue to the backward displacement of the globe is one of the most interesting things. With the introduction of Copper's orbitonometer, many authors utilized it in case of exophthalmos-producing disease such as Graves' disease, inflammatory conditions of orbit, pseudotumor and neoplasms. The resistance to retrodisplacement of the globe in normal and Graves' disease was measured and the data was analysed in this paper. The orbitonometry with 50 gr., 100 gr. and 200 gr. weight was performed in 40 normal subjects and in 54 cases of thyroid dysfunction. The degree of the displacement of the eyeball were tabulated in table 2. This result shows that severe degree of exophthalmos and ocular findings are always associated with higher orbital tensions.