Cocaine, Amphetamine and Apraclonidine Pupil effects in Horner Syndrome

see Horner syndrome and Cocaine

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 and their mechanism of action on the Iris