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Characteristic phases in diurnal variation of systolic blood pressure (SBP) in 70 patients with primary open-angle glaucoma (n=3282 self-measurements). Systolic blood pressure was significantly lowered from 7am – 12am (p<0.05) and significantly increased from 12am – 6pm (p<0.05). Indicated is the mean systolic blood pressure with 95% confidence intervals.
