Table 2 Demographic and clinical characteristics of the group F and S
Group F (n = 68) | Group S (n = 38) | p-value | |
|---|---|---|---|
Gender (male: female) | 30: 38 | 16: 22 | 0.503 |
Age at onset of exotropia, mo | 21.3 ± 16.8 (65/68) | 23.0 ± 13.5 (34/38) | 0.617 |
Operated eye at first surgery (right: left) | 32:36 | 18:20 | 0.568 |
First surgery | |||
Age at first surgery, yr | 5.2 ± 1.6 (3–12) | 5.3 ± 4.1 (3–29) | 0.781 |
Preoperative distance deviation, PD | 33.1 ± 5.1 (25–50) | 32.7 ± 5.2 (25–50) | 0.736 |
Preoperative near deviation, PD | 33.4 ± 4.8 (25–50) | 33.5 ± 5.6 (25–50) | 0.926 |
SE refractive errors at first surgery, D | |||
Right eye | − 0.13 ± 0.95 | −0.32 ± 1.03 | 0.349 |
Left eye | −0.17 ± 1.04 | −0.22 ± 1.05 | 0.807 |
Immediate postoperative deviation, PD | 2.5 ± 3.3 (−4 to 10) | −0.4 ± 3.2 (−9 to 6) | < 0.001 |
6 months postoperatively deviation, PD | 15.5 ± 3.9 (12–25) | 6.3 ± 3.5 (0–10) | < 0.001 |
Interval from first to second surgery, mo | 63.0 ± 19.0 (31–151) | 80.0 ± 35.8 (33–202) | 0.009 |
Second surgery | |||
Age at second surgery, yr | 8.3 ± 2.1 | 10.2 ± 5.8 | 0.059 |
Preoperative distance deviation, PD | 27.3 ± 3.2 (20–35) | 27.9 ± 3.7 (23–35) | 0.390 |
Preoperative near deviation, PD | 28.0 ± 3.7 (20–35) | 28.2 ± 3.7 (23–35) | 0.815 |
SE refractive errors at second surgery, D | |||
Right eye | −0.97 ± 1.79 | − 1.53 ± 2.12 | 0.150 |
Left eye | −0.93 ± 1.57 | −1.64 ± 2.31 | 0.094 |
Result of stereotest | |||
Lang I test, passed, (%) | 56/66, (84.8) | 32/36, (88.89) | 0.256 |
Stereo Fly Stereotest ≤800 arcsec | 20/25 | 11/14 | 0.611 |