TABLE 1.
Lateral Rectus Size in Complete Palsy
| Maximum Cross Section (mm2) | Posterior Volume (mm3) | |||
|---|---|---|---|---|
| Sup | Inf | Sup | Inf | |
| Patient | Compartment | Compartment | Compartment | Compartment |
| 1 | 54.7% | 45.5% | 58.1% | 45.8% |
| 2 | 38.2% | 33.8% | 60.0% | 60.0% |
| 3 | 61.9% | 67.8% | 60.8% | 73.1% |
| 4 | 42.7% | 39.0% | 50.1% | 37.0% |
| 5 | 45.1% | 33.6% | 48.8% | 32.2% |
| 6 | 55.2% | 56.7% | 65.9% | 68.7% |
| 7 | 16.2% | 21.8% | 31.6% | 24.2% |
| 8 | 39.5% | 59.2% | 58.1% | 60.4% |
| 9 | 21.9% | 20.3% | 30.2% | 29.7% |
| 10 | 55.9% | 63.5% | 52.5% | 59.1% |
| 11 | 21.9% | 34.5% | 35.3% | 33.5% |
| 12 | 51.8% | 38.6% | 40.9% | 39.4% |
| Average | 42.1% | 42.9% | 49.3% | 46.9% |
| t test | 0.00000004 | 0.0000002 | 0.000000006 | 0.0000002 |
Percent atrophy of the superior (sup) and inferior (inf) compartments compared with the normal, uninvolved lateral rectus. Larger numbers represent a greater atrophic change. The t tests are statistical comparisons with normal controls with superior compartment maximum cross section = 17.0 ± 3.0 (SD) mm2, inferior compartmentmaximumcross section= 18.2 ± 3.0mm2, superior compartment posterior volume = 52.7 ± 11.4 mm3, and inferior compartment posterior volume = 60.1 ± 13.2 mm3.