Table 1

 Pupil size and upper lid level changes (SD) (mm) of the groups

Variable (mm)OSP group (n = 31)Control group (n = 54)
Baseline (range)Apraclonidine (range)p ValueBaseline (range)Apraclonidine (range)p Value
PS, pupil size; PD, pupil difference; LR, lid retraction.
*Retraction with respect to the presumed normal upper lid level.
PS2.33 (0.47) (2–4)4.38 (1.06) (3–8)<0.0013.09 (0.70) (2–4.5)2.94 (0.54) (2–4.5)<0.05
PD2.04 (0.83) (1–4.5)−0.14 (0.45) (−1–0.5)<0.001
Ptosis1.35 (0.75) (0–3)−0.40 (0.89)* (0– (−3))<0.0010.19 (0.51) (0–2)−0.41 (0.79)* (0–(−3))<0.001
LR1.75 (1.00) (0–4)0.61 (0.82) (1–3)<0.001