Table 3.
Univariate associations between clinical and surgical variables and the primary outcome of residual esotropia ≤10 prism diopters in persons with strabismus following chronic 6th nerve palsy
| Variable | ≤10 PD (n=37), n (%) | >10 PD (n=18), n (%) | P |
|---|---|---|---|
| Age | 27.0 (17) | 22.0 (20) | 0.38 |
| Gender | |||
| Male | 29 (65.9) | 15 (34.1) | 0.67 |
| Female | 8 (72.7) | 3 (27.3) | |
| Affected eye(s) | |||
| Unilateral | 34 (72.3) | 13 (27.7) | 0.05 |
| Bilateral | 3 (37.5) | 5 (62.5) | |
| Etiology | |||
| Neoplasm | 4 (80.0) | 1 (20.0) | 0.25 |
| Trauma | 25 (59.5) | 17 (40.5) | |
| Viral | 1 (100) | 0 | |
| Idiopathic | 4 (100) | 0 | |
| Vasculopathy | 3 (100) | 0 | |
| Preoperative angle of deviation | |||
| Median | 40.0 (23) | 60 (39) | 0.002 |
| Preoperative degree of limitation of abduction | |||
| Incomplete | 14 (37.8) | 1 (5.6) | 0.012 |
| Complete | 23 (62.2) | 17 (94.4) | 0.41 |
| Preoperative presence of diplopia | |||
| Yes | 5 (13.5) | 4 (22.2) | 0.78 |
| No | 32 (86.5) | 14 (77.8) | |
| Preoperative head turn | |||
| Yes | 15 (40.5) | 8 (44.4) | |
| No | 22 (59.5) | 10 (55.6) | |
| Management | |||
| Surgery with botulinum toxin | 14 (63.6) | 8 (36.4) | 0.64 |
| Surgery without botulinum toxin | 23 (69.7) | 10 (30.3) | |
| Type of surgery | |||
| SR + IR transposition | 9 (47.4) | 10 (52.6) | 0.09 |
| SR + IR transposition and MR recession | 3 (50.0) | 3 (50.0) | |
| MR recession and LR resection | 16 (88.9) | 2 (11.1) | |
| SR transposition + MR recession | 4 (80.0) | 1 (20.0) | |
| MR recession | 2 (100) | 0 | |
| BMR | 3 (60.0) | 2 (40.0) |
SR: Superior rectus, IR: Inferior rectus, MR: Medial rectus, LR: Lateral rectus, BMR: Bilateral medial rectus, PD: Prism diopters