Table 2

CDI characteristics in patients with retinal vein occlusion at presentation

	Central retinal vein occlusion						Branch retinal vein occlusion
	Ischaemic (n=18)			Non-ischaemic (n=50)			Ischaemic + non-ischaemic; (n=33)
	Affected eye	Unaffected eye	Intragroup p value*	Affected eye	Unaffected eye	Intragroup p value**	Affected eye	Unaffected eye	Intragroup p value*	Intergroup p value**
Data expressed as mean (SD).
*Wilcoxon signed rank sum test to compare affected and unaffected eyes. Tests performed within each group.
**One way ANOVA to compare the mean value of affected eyes over the three groups.
RI = resistance index in the central retinal artery; CRVmax = maximal venous flow velocity in the central retinal vein (cm/s); CRVmin = minimum venous flow velocity in the central retinal vein (cm/s); AVT = arteriovenous passage time measured by fluorescein angiography in seconds.
RI (CRA)	0.89 (0.11)	0.79 (0.12)	0.0002	0.84 (0.13)	0.75 (0.08)	0.00001	0.77 (0.10)	0.73 (0.11)	0.0532	0.001
CRVmin	1.83 (0.94)	2.43 (1.06)	0.0247	2.28 (0.73)	2.91 (1.04)	0.00001	2.48 (0.60)	2.57 (0.72)	0.4787	0.013
CRVmax	2.94 (1.34)	3.82 (1.75)	0.0412	3.66 (1.19)	4.56 (1.49)	0.00001	4.28 (1.18)	4.47 (1.17)	0.4012	0.001
AVT	17.89 (3.84)			14.27 (4.23)			13.06 (4.17)			0.001