ox plot of control (blue) and patient (green) values in each extra-ocular muscle: range of motion (A), cross-sectional area (B) and T2 relaxation time (C). The box represents 25th – 75th percentiles, the solid line in the box represents the median value, stems are to maximum and minimum values, o = minor outlier; + = major outlier. IO inferior oblique, IR inferior rectus, LR lateral rectus, MR medial rectus, SO superior oblique, SR superior rectus