====== Botulinum Toxin Dosage for Strabismus ======

^Condition^Units^
|Horizontal Strabismus*- under 25 PD|2.5|
|Horizontal Strabismus- over 25 PD|2.5-5.0|
^            6th Nerve Palsy- Injection into Medial Rectus           ||
|Early- 1-3 months |1-2|
|Later with transposition or Medial contracture |2.5|
^                      Vertical Muscles                              ||
|Inferior Rectus for comitant deviation |2.5|
|Inferior Rectus for thyroid |5|
|Inferior Oblique |2.5|
|Superior Rectus (rare) |2|
^                      Other indications                             ||
|Children with Infantile esotropia or exotropia (bilateral injections) |2.5|
|Weak Muscles: Myasthenia, external ophthalmoplegia, aberrant regeneration, cerebral palsy |1-2|
|Retrobulbar injection for nystagmus |25|

  * smaller doses for medial rectus, larger for lateral rectus and smaller doses for small women
  * From: McNeer, Magoon and Scott. Chemodenervation Therapy: Technique and Indications in Clinical Strabismus Management p.428

{{tag>strabismus botox strabismus_surgery}}