Hi. I'm online and happy to answer your question today.
I am not sure on the number of surgical cases for blepharospasm worldwide, however I do know it is an accepted, if not always successful, approach to this difficult problem.
Here is an excellent article on your condition:
Dr. Anderson and Associates are considered to be very knowledgeable in this surgical treatment. Here is a link to an article he wrote some time ago:
Here is his contact information:
Oculoplastic Surgery Inc
If I was in your shoes I would, if at all possible, try to meet with Dr. Anderson and see what he has to say.
My system shows that your are online. Are you available to chat?
I guess you have stepped away from your computer.
I noted that you were typing but nothing showed up on my screen.....
And, now, the obligatory word from our sponsors: :o)
I hope that this information was helpful for you. Please, allow me get credit for my time and effort in assisting you and press the ACCEPT button for this assist. I will be glad to answer additional questions until you are satisfied. Thank you very much. Positive Feedback and/or Bonus is welcomed and appreciated.