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Observations on bilateral simultaneous botulinum toxin injection in infantile esotropia
K W McNeer1, R F Spencer, M G Tucker
1Department of Ophthalmology, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298-0262.
Journal of Pediatric Ophthalmology and Strabismus
|July 1, 1994
Summary
Bilateral simultaneous botulinum toxin (BoTX) injections effectively realign infantile esotropia in young patients. This non-surgical approach offers a reliable therapy for strabismus, significantly reducing eye deviation.
Area of Science:
- Ophthalmology
- Neurology
- Pharmacology
Background:
- Strabismus, particularly infantile esotropia, often requires surgical intervention.
- Botulinum toxin (BoTX) presents a pharmacological alternative for strabismus management.
- Previous research explored unilateral or sequential BoTX injections, but not simultaneous bilateral administration.
Purpose of the Study:
- To evaluate the efficacy and safety of bilateral simultaneous medial rectus muscle BoTX injections in infantile esotropia.
- To assess long-term ocular alignment stability following this treatment modality.
Main Methods:
- Bilateral simultaneous medial rectus muscle BoTX injections were administered to 57 patients with infantile esotropia.
- Patients were followed for a minimum of 12 months post-injection.
- Pre- and post-treatment esotropic angles were measured in prism diopters.
Main Results:
- In infants under 12 months (n=27), the mean esotropic angle decreased from 43 +/- 12 to 1 +/- 2 prism diopters.
- In older infants (mean age 24 months, n=30), the mean esotropic angle reduced from 31 +/- 12 to 2 +/- 3 prism diopters.
- Associated ophthalmic conditions were also evaluated.
Conclusions:
- Bilateral simultaneous BoTX injection is a reliable and effective therapy for infantile esotropia.
- This non-surgical approach achieves stable ocular realignment with minimal risk.
- BoTX offers a promising alternative to surgery for managing infantile esotropia.