Ocular Effects of the Sympathetic Nervous System

Case 5

A patient enters your examination room with complaints of severe, right-sided headaches X 1 week.  The patient has also noticed right-sided muscle weakness throughout his body over that same period.  You perform appropriate testing, and determine that the OD pupil is smaller than the OS, and the interpalpebral distance is smaller OD than OS.  You make the tentative diagnosis of Horner’s syndrome OD.

Cocaine testing shows reduced pupil dilation OD.  3 days later, the patient returns for hydroxyamphetamine testing, which shows normal pupil dilation OD.

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Question 12

What type of Horner’s syndrome is most likely for the patient in case 5?

Click the appropriate answer.

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