The cross-sectional area ratio of orbital fat and extraocular muscles to the
total orbit in patients with thyroid-associated ophthalmopathy according to
proptosis [proptosis (n = 19), no
proptosis (n = 25), control
(n = 23)]. Proptosis: Hertels over
17.0 mm or bilateral Hertel difference >2.0 mm measured
using Hertel exophthalmometry;
*p < 0.01 compared with controls
(Kruskal–Wallis test). E/F, extraocular muscles/orbital fat; E/O,
extraocular muscles/total orbital area; F/O, orbital fat/total orbital
area.