Table 1

Mean change in pupillary diameter in patients with Horner’s syndrome

Change in pupil diameter followingChange in pupil diameter followingChange in pupil diameter following
Baseline pupilCocaineHyrdoxyamphetaminePhenylephrine
Size (mm)10% (mm)1% (mm)1% (mm)
Normal pupilHorner’s pupilNormal pupilHorner’s pupilNormal pupilHorner’s pupilNormal pupilHorner’s pupil
Central (n = 2)3.2521.50.252.12.250.30.25
Pre-ganglionic (n = 1)42.53.00.52.52.90.20.5
Post-ganglionic (n = 11)4.02.91.80.21.80.30.21.9