• Thirteen patients with varying degrees of Graves' ophthalmopathy were examined using high-resolution infrared oculography to determine peak velocities for horizontal eye movements between 3° and 30°. As severity of the orbital disease increased, peak velocities became substantially lower. Vertical-muscle surgery failed to have any effect on peak velocity of horizontal eye movements. In contrast, orbital decompression caused notable improvement in peak velocity of eye movements. Eye-movement recordings, which provide a measure of extraocular muscle function rather than structure, may provide a safe, sensitive, and accurate method for classifying and following up patients with Graves' ophthalmopathy.
Feldon SE, Unsöld R. Graves' Ophthalmopathy Evaluated by Infrared Eye-Movement Recordings. Arch Ophthalmol. 1982;100(2):324-328. doi:10.1001/archopht.1982.01030030326022