Efficacy of Botulinum toxin type A in the treatment of benign essential blepharospasm and hemifacial spasm

Purpose: To study the efficacy of botulinam toxin type A injection in benign essential blepharospsm and hemifacial spasm. Methods: This quasi interventional study was done in a tertiary eye care centre in Dhaka, Bangladesh from January 2013 to April 2016. We included all patients of benign essential blepharospsm and hemifacial spasm those who had consented for the study. Results: 60 patients was benign essential blepharospasm and 60 patients was hemi facial spasm. Female was 61.3% and male was 38.7%.The mean age of BEB was 57.38 years and the mean age of HFS was 44.72 years. The mean baseline score of eyelid spasm was 3.60 in BEB and 3.40 in HFS. The mean score of eyelid spasm was 3.31±1.54 in benign essential blepharospasm and 2.67±1.39 in hemifacial spasm after 24 weeks of treatment. Conclusion: Outcome of botulinam toxin type A injection was more effective in hemifacial spasm than benign essential blepharospasm.