Table 1.

DVA results before and after trabeculectomy. RR stands for blood pressure measurements according to Riva Rocci. IOP is the abbreviation for intraocular pressure assessed by Goldmann’s applanation tonometry. RR and IOP are given in mm Hg. MU = measuring units, art = artery, ve = vein.

	Group 1			Group 2
	Mean	SEM		Mean	SEM
n	19			7
age	63.4	4.0	ns	60.0	5.1
RR syst	125.5	4.0	ns	127.2	8.4
RR diast	74.9	4.3	ns	79.6	3.3
before surgery:
IOP	21.6	2.7	ns	20.2	2.4
baseline MU art	106.6	4.0	ns	102.4	5.1
max dilation art %	1.4	0.4	**	6.7	1.5
peak amplitude %	2.1	0.4	**	6.6	1.6
max constriction %	-0.7	0.6	ns	0.1	0.3
baseline MU ve	133.0	2.4	ns	127.8	7.2
max dilation ve %	3.1	0.4	*	7.7	1.8
after surgery:
IOP	9.0	1.5	ns	10.5	1.5
baseline MU art	109.5	4.2	ns	106.7	6.2
max dilation art %	3.8	0.5	*	6.3	0.5
peak amplitude %	3.5	0.7	*	7.4	1.8
max constriction %	0.5	0.5	ns	-0.9	1.2
baseline MU ve	138.6	2.6	ns	141.5	7.7
max dilation ve %	4.6	0.6	*	7.2	1.0