Table 4.

Frequency of abnormal blood flow changes of more than 10% in all participating subjects (primary open‐angle glaucoma (POAG) n = 32, healthy control subjects n = 33)

Change in blood flow	Number of subjects
During handgripping
POAG
Decrease in more than 10% during 1, 2, or all 3 periods	1/1/3
Increase in more than 10% during 1, 2, or all 3 periods	1/0/4
Healthy controls
Decrease in more than 10% during 1, 2, or all 3 periods	1/0/2
Increase in more than 10% during 1, 2, or all 3 periods	0/1/0
During recovery
POAG
Decrease in more than 10% during 1, 2, or all 3 periods	2/1/3
Increase in more than 10% during 1, 2, or all 3 periods	1/0/0
Healthy controls
Decrease in more than 10% during 1, 2, or all 3 periods	3/1/2
Increase in more than 10% during 1, 2, or all 3 periods	2/1/0