Abstract
Objective: To assess the outcome of botulinum A toxin (BTXA) to treat surgically overcorrected intermittent exotropia in children.
Methods: A retrospective analysis was performed on a series of children with consecutive esotropia treated with BTXA.
Results: Six children with a mean consecutive esotropia of 21 prism diopters (PD) were treated with BTXA at a mean of 19.8 months following strabismus surgery. Two patients underwent a single injection, three patients 2 injections, and one patient 3 injections. Complications included transient ptosis and a vertical deviation. Mean follow-up from last BTXA injection was 16 months. At last follow-up, 4 of the 6 patients were orthotropic and stereopsis was present in 4 of 5 patients old enough to cooperate with testing. One patient was treated with strabismus surgery following a single BTXA injection.
Conclusions: BTXA is an efficacious treatment for consecutive esotropia in children. However, in our series, two-thirds of patients required multiple injections to achieve the desired outcome and one ultimately had an additional strabismus surgery.
ACKNOWLEDGMENTS
Supported in part by NIH Departmental Core Grant EY06360 and Research to Prevent Blindness, Inc., New York, New York.
Declaration of interest: The authors declare no conflict of interest.