Fig. 1

An axial 3-mm-thick T2-weighted fat suppressed axial image of a patient with thyroid-associated ophthalmopathy. The arrows in (A) show bilateral prolapse of the lacrimal glands. (B) Lacrimal gland prolapse, measured as the vertical distance from the top of the lacrimal gland to the interzygomatic line, is 15.1 mm on the right and 14.6 mm on the left. (C) Exophthalmos is measured as the vertical distance from the top of the cornea to the interzygomatic line