Patient characteristics
| Reoperation group (n=24) Mean (SD) | Botulinum toxin group (n=23) Mean (SD) | |
|---|---|---|
| Age at onset of deviation (years) | 3.01 (0.96) | 2.8 (0.79) |
| Age at initial surgery (years) | 3.56 (1.53) | 3.29 (1.28) |
| Time between initial and secondary procedure (years) | 1.5 (0.98) | 0.99 (0.84) |
| Angle before retreatment (prism dioptres) | ||
| Distance | 18.58 (18.52) | 18.69 (16.56) |
| Near | 21.32 (18.84) | 22.16 (16.83) |
| Spherical equivalent before retreatment (dioptres) | 2.21 (1.3) | 1.98 (1.07) |
| Visual acuity ratio before retreatment (amblyopic eye when amblyopia exists/sound eye) | 0.88 (0.11) | 0.89 (0.09) |
| Follow up after retreatment (years) | 2.9 (0.81) | 2.7 (0.42) |