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Updated: Jun 26, 2026

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
Published on: November 9, 2016
[Observation of botulinum toxin A management in childhood with intermittent exotropia]
1Beijing Tongren Eye Centre, Affiliated Beijing Tongren Hospital, Capital University of Medical Science, Beijing 100730, China.
Insights
Botulinum toxin A (BTXA) injections offer a less invasive, effective treatment for childhood intermittent exotropia. Both BTXA and surgery showed comparable recovery rates, with BTXA being a rapid outpatient procedure.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Strabismus Management
Background:
- Intermittent exotropia is a common childhood strabismus.
- Current management options include surgery and non-surgical approaches.
- Evaluating novel treatments like botulinum toxin A is crucial.
Purpose of the Study:
- To assess the efficacy of botulinum toxin A (BTXA) in managing intermittent exotropia in children.
- To compare the outcomes of BTXA treatment with traditional surgical recession.
Main Methods:
- A prospective clinical study involved 60 children (4-12 years) with intermittent exotropia.
- Patients were assigned to either a surgery group (bilateral rectus muscle recession, n=30) or a BTXA group (bilateral rectus muscle injection, n=30).
- Eye alignment and binocular vision were evaluated 6 months post-treatment.
Main Results:
- The BTXA group showed a significant reduction in exodeviation, with a 76.67% recovery rate.
- The surgery group achieved a 90.00% recovery rate.
- No statistically significant difference in recovery rates was observed between the BTXA and surgery groups (P=0.166).
- Improvements in fusion and stereopsis were noted in both groups.
Conclusions:
- Botulinum toxin A injection is a rapid, less invasive, and effective treatment for childhood intermittent exotropia.
- BTXA offers a viable alternative to surgery with comparable outcomes.
- Further research can explore long-term efficacy and optimal dosing for BTXA in strabismus management.
Objective:
To observe the effect of botulinum toxin A (BTXA) management in childhood with intermittent exotropia.
Methods:
A prospective non-random clinical study was performed in 60 children aged from 4 to 12 years, who diagnosed to be intermittent exotropia. Patients were divided into surgery groups and BTXA group according to the intention of patient's parent. The recession of bilateral rectus muscle was performed in 30 patients in surgery group. BTXA injection into bilateral rectus muscle was performed in 30 patients in BTXA group. Eye alignment and the binocular vision were evaluated 6 months after the treatments.
Results:
In BTXA group, the deviation was (-41.33 +/- 12.17)Delta (-30Delta to -75Delta) at the baseline, and (6.23 +/- 9.80)Delta (-30Delta to 0Delta) 6 month after BTXA injection. Among the patients, 7 cases were under-correct. In surgery group, the deviation was (-42.83 +/- 11.72)Delta (-25Delta to -80Delta) at the baseline, and (2.67 +/- 5.21)Delta (-15Delta to +15Delta) 6 months after surgery. Among these patients, 1 case was under-corrected, and 2 cases were overcorrected. The recovery rate was 76.67% and 90.00% respectively in BTXA and surgery group, and was no statistically significant difference these two groups (P = 0.177) and the recovery rate (chi2 = 0.42, P = 0.166). Some patients were found to have fusion and distance stereopsis re-built, while some others were found to have near stereopsis improvement in both groups.
Conclusion:
BTXA injection is a rapid, less invasive and effective procedure for the intermittent exotropia.
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