Autonomic system activity and 24-hour blood pressure variations in subjects with normal- and high-tension glaucoma.

Purpose: As suggested by findings of abnormal responses to posture in patients with normal-tension glaucoma (NTG), cardiovascular autoregulation may also be defective in primary open-angle glaucoma (POAG).

Patients And Methods: Both 24-hour ambulatory blood pressure monitoring and the head-up tilt test were performed in 17 subjects with NTG and in 13 subjects with high-tension POAG (ht-POAG). These groups were compared with 17 age-matched healthy individuals.