Figure 4.

The effect of 90° upward and downward roll tilt on coronal plane coordinates of the four rectus pulleys, referenced to the globe center, in 31 normal control orbits and 12 affected and 12 fellow orbits in subjects with SO palsy. Error bars, 95% confidence intervals. Solid and broken lines between coordinates in the center panel connect the normal pulley array. The four side panels expand data for individual pulleys. Note the torsional shifts of normal rectus pulleys (center graph), but the complex pattern of different shifts in palsied and fellow orbits in SO palsy.