Fig. 7. A. Axial MRI scans centered on right orbit in right and left gaze demonstrating inflection of the horizontal rectus paths at their respective pulleys. Pulling directions of the horizontal rectus muscles are denoted by dotted lines and arrowheads. LR, lateral rectus; MR, medial rectus. B. Sagittal MRI scan of a right orbit in three positions of vertical gaze demonstrating inflection of the vertical rectus paths at their respective pulleys. Pulling directions of the vertical rectus extraocular muscles are shown by dotted lines. IO, inferior oblique; IR, inferior rectus; LPS, levator palpebrae superioris; SR, superior rectus.