Table 1 Baseline characteristics and clinical features : comparison between the IXT-ptosis and IXT-only groups.
IXT-ptosis (n = 45) | IXT-only (n = 58) | p value | |
|---|---|---|---|
Age (years, mean ± SD) | 6.5 ± 2.9 | 6.7 ± 2.0 | 0.45 |
Sex (M:F) | 26:19 | 31:27 | 0.12 |
Cycloplegic refraction, OD (D, mean ± SD) | |||
Spherical | −0.67 ± 2.57 | −0.42 ± 1.99 | 0.29 |
Cylinder | −1.28 ± 1.05 | −0.75 ± 0.86 | 0.07 |
Spherical equivalent | −1.31 ± 2.84 | −0.80 ± 1.93 | 0.17 |
Cycloplegic refraction, OS (D, mean ± SD) | |||
Spherical | −0.12 ± 1.67 | −0.33 ± 1.94 | 0.34 |
Cylinder | −1.52 ± 1.06 | −0.93 ± 0.88 | 0.09 |
Spherical equivalent | −0.90 ± 2.05 | −0.79 ± 1.97 | 0.67 |
BCVA (logMAR, mean ± SD) | |||
Right eye | 0.06 ± 0.08 | 0.03 ± 0.07 | 0.42 |
Left eye | 0.02 ± 0.06 | 0.04 ± 0.08 | 0.47 |
Magnitude of exodeviation (PD, mean ± SD) | |||
At distance | 20.4 ± 7.7 | 25.6 ± 8.7 | 0.39 |
At near | 22.5 ± 7.3 | 25.8 ± 9.7 | 0.41 |
Stereopsis (log arcsec, mean ± SD) | |||
Titmus test | 2.24 ± 0.71 | 1.99 ± 0.55 | 0.12 |
Randot Preschool Stereo test | 2.01 ± 0.35 | 1.86 ± 0.34 | 0.19 |
Distance stereo test | 2.85 ± 0.53 | 2.21 ± 0.50 | 0.02 |
Presence of suppression, n (%) | |||
4PD base out test | 20 (44.4) | 16 (27.6) | 0.25 |
Bagolini test | 8 (17.8) | 2 (3.5) | 0.04 |
Worth 4 dot test | 14 (31.1) | 12 (20.7) | 0.38 |
Office based control score (mean ± SD) | |||
At distance | 2.8 ± 1.87 | 2.2 ± 1.13 | 0.08 |
At near | 1.8 ± 0.67 | 1.6 ± 0.74 | 0.11 |
Constant exotropia, n (%) | 5 (11.1) | 5 (8.6) | 0.75 |
Oblique muscle overaction, n (%) | 16 (35.5) | 19 (32.8) | 0.65 |
Dissociated vertical deviation, n (%) | 4 (8.9) | 5 (8.6) | 0.88 |
Coexisting vertical strabismus, n (%) | 3 (6.7) | 3 (5.2) | 0.83 |
Latent nystagmus, n (%) | 1 (2.2) | 0 (0) | > 0.99 |
