Related Experiment Videos
Botulinum treatment of childhood strabismus
A B Scott1, E H Magoon, K W McNeer
1Smith-Kettlewell Eye Research Institute, San Francisco, CA 94115.
Insights
Botulinum toxin injections effectively treated strabismus in children, with 61% achieving alignment. This safe, non-surgical approach corrected smaller eye deviations more frequently.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Neurology
Background:
- Strabismus, or eye misalignment, affects many children.
- Conventional treatments for strabismus can be invasive.
- Botulinum toxin injections offer a potential alternative for strabismus correction.
Purpose of the Study:
- To evaluate the efficacy and safety of botulinum toxin injections for treating strabismus in pediatric patients.
- To determine the success rate of botulinum toxin injections in correcting different types and magnitudes of strabismus.
Main Methods:
- Retrospective analysis of 413 children (2 months to 12 years) treated with extraocular muscle botulinum injections.
- An average of 1.7 injections per patient was administered.
- Follow-up data from 362 children (88%) at an average of 26 months post-injection.
Main Results:
- Overall, 61% of patients achieved a correction of 10 prism diopters (PD) or less.
- Esotropia cases showed a 66% correction rate, including 65% for infantile esotropia.
- Smaller deviations (10-20 PD) had a higher success rate (73%) than larger deviations (20-110 PD, 54%).
- Correction rates were similar for previously operated and unoperated cases.
- No cases of globe perforation, amblyopia, or vision loss were reported.
Conclusions:
- Botulinum toxin injections are an effective and safe treatment option for pediatric strabismus.
- The treatment demonstrates good outcomes, particularly for smaller deviations and esotropia.
- This method provides a viable alternative to surgery with a favorable safety profile.
Abstract:
Four hundred thirteen children ranging in age from 2 months to 12 years were treated for strabismus by botulinum injection of extraocular muscles. An average of 1.7 injections per patient was given. Follow-up at an average of 26 months after the last injection (minimum, 6 months) was available on 362 children (88%). The frequency of correction of 10 prism diopters (PD) or less in various groups of strabismus cases was: all 362 cases, 61%; all esotropia, 66%; infantile esotropia, 65%; and exotropia, 45%. Smaller deviations (10-20 PD) were more frequently corrected (73%) than were larger deviations (20-110 PD, 54%). The frequency of correction to 10 PD or less of previously operated cases was not different from that of unoperated cases. There was no globe perforation, amblyopia, or visual loss produced by the injection treatment in this series.