hydroxyamphetamine

Pharmacologic Testing for Horner Syndrome (video): Lecture from Dr. Andrew Lee, M.D.

Video credit: Lee AG. Pharmacologic Testing for Horner Syndrome. Video. YouTube. Available online. Accessed 02-27-2019.

Hydroxyamphetamine Test

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Hydroxyamphetamine test for Horner syndrome.

A. Before drops administered (suspected right Horner syndrome).

B. After drops administered. Note the dilation of both pupils. This indicates an intact 3rd-order, postganglionic neuron and localizes the lesion to the 1st-order (central) or 2nd-order (preganglionic) neuron.

Image credit: Modified from clinical images courtesy of Lanning B. Kline, M.D. American Academy of Ophthalmology. Used with permission for educational purposes.