PURPOSE: Evaluate the results and complications from type A botulinum toxin for strabismus treatment. METHODS: Type A botulinum toxin (Prosigne®) was used in 20 patients from Faculdade de Medicina do ABC (FMABC) ophthalmology ambulatory from 2006 to 2009, for esotropia treatment. The application was performed in 15 children with esotropia smaller than 50 prism diopter (PD) in both medial rectus muscles, and in 5 adults with esotropia due to VI nerve paralysis or paresis, only in the opposite muscle. The incidence of adverse effects was also evaluated. The minimum post-treatment follow up was 3 months. RESULTS: Three esotropic children were submitted to second application. Therefore, 18 applications were done. Of these, 14 were measured at least for six months of follow up. The average age at the time of application, in the children group, was 1.89(±0.54) years. Average convergent deviation before application was 36.67(±6.18) PD, after one week was -5.06(±23.05) PD and after three months was 17.50(±14.51) PD. At six months follow up, less than 10 PD of deviation was found in 50% (7/14) of the applications. The complications were blefaroptosis in 38.89% (7/18) applications, and vertical deviation in 11.11% (2/18). Seven applications in five adults were studied. In this group, average esotropic deviation before application was 46.43(±23.40) PD, after one week was 30.71(±30.61) PD and after three months was 41.20(±30.82) PD. Satisfied results was observed only in one patient from this group. CONCLUSION: Strabismus children got better with ocular deviation reduction after type A botulinum toxin (Prosigne®).
Botulinum toxin type A; Botulinum toxin type A; Strabismus; Similar drugs; Treatment outcome; Oculomotor muscles
