Analysis of corneal keratometry in patients with hemifacial spasm

Purpose: To determine the corneal keratometric variation in patients' eyes with unilateral hemifacial spasm which underwent treatment with botulinum toxin and set against control group. Methods: Eighteen patients with hemifacial spasm were submitted to complete ophthalmologic exam, corneal topography and Orbscan previously botulinum toxin application and one month afterwards. They were evaluated for keratometry, BFS (anterior and posterior) and Roush value. Results: There were no statistical differences between eyes with hemi facial spasm and normal eyes related to keratometric values by topography and in the parameters evaluated by Orbscan as Roush and best fit sphere (anterior or posterior) prior to or after treatment with botulinum toxin. Conclusion: This study has not shown statistical difference between the corneal curvatures when compared eyes with hemi facial spasm with the opposite normal eyes.