Table 1
Mean change in pupillary diameter in patients with Horner’s syndrome
| Change in pupil diameter following | Change in pupil diameter following | Change in pupil diameter following | ||||||
|---|---|---|---|---|---|---|---|---|
| Baseline pupil | Cocaine | Hyrdoxyamphetamine | Phenylephrine | |||||
| Size (mm) | 10% (mm) | 1% (mm) | 1% (mm) | |||||
| Normal pupil | Horner’s pupil | Normal pupil | Horner’s pupil | Normal pupil | Horner’s pupil | Normal pupil | Horner’s pupil | |
| Central (n = 2) | 3.25 | 2 | 1.5 | 0.25 | 2.1 | 2.25 | 0.3 | 0.25 |
| Pre-ganglionic (n = 1) | 4 | 2.5 | 3.0 | 0.5 | 2.5 | 2.9 | 0.2 | 0.5 |
| Post-ganglionic (n = 11) | 4.0 | 2.9 | 1.8 | 0.2 | 1.8 | 0.3 | 0.2 | 1.9 |
