Table 1.
Patients’ characteristics in the bilateral lateral rectus recession (BLR) group and unilateral lateral rectus recession–medial rectus resection (RR) group.
| Characteristics, mean ± SD (range) | BLR group (n = 363) | RR group (n = 197) | P value |
|---|---|---|---|
| Gender (M:F) | 164:199 | 87:110 | 0.817a |
| Age at onset (y) | 3.7 ± 2.5 (0–12) | 4.0 ± 2.6 (0–10) | 0.178b |
| Age at surgery (y) | 6.3 ± 2.5 (3–15) | 6.2 ± 2.4 (3–15) | 0.631b |
| Follow-up period (y) | 9.5 ± 2.6 (5.0–15.0) | 9.6 ± 2.5 (5.0–15.5) | 0.547b |
| Best corrected visual acuity (LogMAR) | 0.18 ± 0.17 (0–0.82) | 0.17 ± 0.15 (0–0.82) | 0.598b |
| Spherical equivalent refractive errors (D) | − 0.19 ± 1.78 (− 7.75 to + 6.50) | − 0.18 ± 1.95 (− 8.00 to + 8.50) | 0.937b |
| Stereopsis (LogArcsec) | 1.94 ± 0.17 (1.60–2.60) | 1.98 ± 0.21 (1.60–2.60) | 0.064b |
| Distance deviation (PD) | 29.2 ± 7.6 (15–68) | 29.1 ± 7.5 (16–75) | 0.888b |
| Near deviation (PD) | 30.0 ± 8.0 (15–70) | 29.1 ± 7.9 (8–70) | 0.223b |
| Fixation preference, n (%) | 70 (19.3%) | 104 (52.8%) | < 0.001a |
| Lateral incomitancy, n (%) | 53 (15.4%) | 30 (16.1%) | 0.827a |
| Constancy of deviation at distance, n(%) | 144 (39.7%) | 95 (48.2%) | 0.051a |
| Constancy of deviation at near, n(%) | 87 (24.0%) | 53 (26.9%) | 0.443a |
BLR: bilateral lateral rectus recession; RR: unilateral lateral rectus recession and medial rectus resection; M: male; F: female; y: years; LogMAR: Logarithm of the minimum angle of resolution; LogArcsec: Log arcsecond; D: diopters; PD: prism diopters.
aP value by Chi-square test, bStudent t test.