Horner's syndrome laboratory findings

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Please help WikiDoc by adding more content here. It’s easy! Click here to learn about editing.

Three tests are useful in confirming the presence and severity of Horner’s syndrome:

1. Cocaine drop test – Cocaine blocks the re-uptake of norepinephrine resulting in the dilation of a normal pupil. The pupil will fail to dilate in Horner’s syndrome.
2. Paredrine test
3. Dilation lag test

Template:WH Template:WS