====== Cocaine, Amphetamine and Apraclonidine Pupil effects in Horner Syndrome ======

===== Cocaine and Amphetamine =====

{{::cocaine_amphetamine_horners.png|}}

  * see [[horner_syndrome_and_cocaine|Horner syndrome and Cocaine]]

===== Apraclonidine =====
  * Will cause "reversal" of anisocoria in Horner syndrome
  * Dilation of the Horner pupil from apraclonidine binding to the Alpha-1 receptors that are up-regulated after 2-5 days 
  * see [[sympathomimetic_eyedrops|Sympathomimetic eyedrops and their mechanism of action on the Iris]]

{{tag>drugs}}