<prompt> A middle aged female is having essential blepharospasm and is planned to be treated with Botulinum toxin. Which of the following is not true?Need repeat injectionsDiplopia may occurType C is most effectiveResponse rate is over 95  <response>: Type C is most effective The initial treatment of choice in essential blepharospasm is Botulinum toxin type A. Among seven available form A, B, C, D, E, F G, only type A is used clinically and is most effective form. Botulinum toxin - Chemodenervation: Type A is used Block neuromuscular junctions Cholinergic Onset 24-72 Hrs Duration 3 months, hence need repeat injections Dose: 1.25-5 unitinjection site. Usually given at 4 initial sites. Response rate is 95-98. Adverse effects: Ptosis, Epiphora, Keratitis, dy eyes, diplopia 