Table 1

 Mean (SD) parameters in the sitting and supine positions

Sitting positionSupine positionp value*
ChBF, choroidal blood flow; DBP, diastolic blood pressure; IOP, intraocular pressure; MBP, mean arterial blood pressure; SBP, systolic blood pressure.
*Paired t test.
IOP (mm Hg)13.0 (2.2)14.0 (2.1)0.0006
SBP (mm Hg)106.2 (12.6)102.7 (7.2)0.046
DBP (mm Hg)71.5 (8.6)63.6 (6.9)0.0001
MBP (mm Hg)86.1 (8.7)80.0 (6.2)<0.0001
Heart rate (beats/min)64.1 (8.1)59.0 (10.1)0.0006
ChBF (arbitrary units)9.5 (2.2)8.9 (2.1)0.0017