Summary of extraocular muscle findings
| Lateral Rectus | Inferior Rectus | Medial Rectus | Superior Rectus | Inferior Oblique | Superior Oblique | |
|---|---|---|---|---|---|---|
| Average maximum diameter (mm)a | 11.7 | 11.7 | 10.5 | 10.0 | 10.6 | 6.4 |
| Average short-axis diameter (mm)a | 6.4 | 6.4 | 5.2 | 5.5 | 3.0 | 3.3 |
| Frequency of enlargementb | 41 (76%) | 19 (35%) | 16 (30%) | 11 (20%) | N/A | 6 (11%) |
| Frequency of most enlargedc | 32 (71%) | 9 (20%) | 3 (7%) | 1 (2%) | N/A | 0 (0%) |
a
Average diameters are based on measurements from all orbits (n = 54).
b
Frequency of enlargement was determined by the number of times a muscle was enlarged of a possible 54 orbits.
c
Frequency of most enlarged muscle was determined by the number of times a muscle was the most enlarged muscle in an eye of 45 affected orbits.