IncobotulinumtoxinA (Xeomin) Versus Placebo in the Treatment of Blepharospasm

Main Inclusion Criteria:

• Male or female pretreated outpatients between ages 18 and 80 years (inclusive)

• A clinical diagnosis of bilateral blepharospasm (BEB) characterized by spontaneous,spasmodic, intermittent or persistent involuntary contractions of the orbicular oculimuscles

• A need for injection of Botulinum toxin (defined by a Jankovic Rating Scale (JRS)severity subscore >= 2)

• On a stable dose of other medications (if any) used for focal dystonia treatment (e.g.anticholinergics and benzodiazepines) for at least 3 months prior to and expectedthroughout the Main Period

• Source documentation of the last two consecutive injection sessions with BOTOX® and astable satisfactory therapeutic response directly prior to trial entry

• At least 10 weeks must have been passed between the last injection with BOTOX® for BEBand Baseline

Main Exclusion Criteria:

• Atypical variant of BEB caused by inhibition of levator palpebrae muscle

• Myotomy or denervation surgery in the affected muscles (e.g. peripheral denervationand/or spinal cord stimulation)

• The previous two injections with BOTOX® with more than 50 Units per eye

• Hypersensitivity to human serum albumin, sucrose, or Botulinum toxin A

• Neuroleptic induced blepharospasm

• Diagnosis of myasthenia gravis, Lambert-Eaton syndrome, amyotrophic lateral sclerosis,or any other significant neuromuscular disease which might interfere with the trial

• Treatment with Botulinum toxins for any indication other than BEB within 4 monthsprior to Baseline and during the trial