The objective of the study is to compare the time to onset of Dysport® versus Botox® in the treatment of lateral orbital rhytids ("crow's feet"). Thirty subjects were enrolled in the study; specifically 30 male or female patients 18 years or older with moderate to severe lateral orbital rhytids at maximum contracture. Each patient were randomized to be treated with Dysport® on one side and Botox® on the other side. Both the injector and patient were blinded to the injected toxin. The efficacy endpoints were determined by investigator and subject live assessment of "crow's feet" at rest and maximum contraction at each visit (every other day for 6 days post-injection, every month for 9 months following) using a validated 5 point photographic scale(no wrinkles \[0\], very fine wrinkles \[1\], fine wrinkles \[2\], moderate wrinkles \[3\] or severe wrinkles \[4\]) used in previous studies. A written description of each photograph was included to help standardize the application of the Photographic Scale.
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To compare the time to onset of action, efficacy and duration of Dysport® versus Botox® Cosmetic in the treatment of lateral orbital rhytids.
Timeframe: 9 months