Table 3.

Correlations between changes in retrobulbar blood flow velocity with changes in optic nerve head morphology in OAG patients of African and European descent.

		NPCA
		RI					EDV
Technique	Measurement	AD		ED		Comparison AD vs. ED	AD		ED		Comparison AD vs. ED
		r	p	r	p	p	r	p	r	p	p
OCT	Cup area	0.63	0.01	−0.01	0.92	0.01	−0.57	0.02	0.04	0.78	0.02
	Rim area	−0.68	0.00	−0.12	0.36	0.02	0.63	0.01	0.14	0.31	0.05
	Cup/Disc area ratio	0.76	0.00	−0.05	0.71	0.00	−0.72	0.00	0.02	0.86	0.00
	Cup/Disc horizontal ratio	0.62	0.01	0.09	0.51	0.04	−0.69	0.00	−0.09	0.48	0.01
	Cup/Disc vertical ratio	0.74	0.00	−0.06	0.66	0.00	−0.73	0.00	0.09	0.52	0.00
	RNFLT	−0.43	0.07	−0.07	0.62	0.17	0.35	0.15	−0.03	0.84	0.17
HRT-III	Cup area	0.64	0.00	−0.05	0.68	0.00	−0.47	0.05	0.08	0.57	0.05
	Rim area	−0.60	0.01	0.04	0.79	0.01	0.52	0.03	−0.02	0.87	0.04
	Rim Volume	−0.60	0.01	−0.01	0.93	0.02	0.47	0.05	0.02	0.89	0.09
	Cup/Disc area ratio	0.76	0.00	−0.03	0.82	0.00	−0.61	0.01	0.01	0.93	0.01
	Linear cup/disc ratio	0.76	0.00	−0.05	0.70	0.00	−0.61	0.01	0.04	0.79	0.01
	RNFLT	−0.53	0.02	0.02	0.88	0.04	0.44	0.07	0.00	0.99	0.10
		TPCA
		RI					EDV
		AD		ED		Comparison AD vs. ED	AD		ED		Comparison AD vs. ED
		r	p	r	p	p	r	p	r	p	p
OCT	Cup area	−0.55	0.02	0.26	0.04	0.00	−0.39	0.13	0.18	0.18	0.04
	Rim area	0.46	0.06	0.03	0.82	0.12	0.40	0.11	0.11	0.40	0.30
	Cup/Disc area ratio	−0.55	0.02	0.06	0.64	0.02	−0.44	0.08	−0.04	0.76	0.15
	Cup/Disc horizontal ratio	−0.58	0.01	0.12	0.35	0.01	−0.46	0.06	0.02	0.86	0.08
	Cup/Disc vertical ratio	−0.55	0.02	0.13	0.32	0.01	−0.44	0.08	0.10	0.44	0.05
	RNFLT	0.25	0.32	0.06	0.64	0.50	0.18	0.48	−0.11	0.43	0.32
HRT-III	Cup area	−0.29	0.26	0.09	0.49	0.18	−0.50	0.04	0.11	0.40	0.02
	Rim area	0.23	0.35	−0.01	0.92	0.38	0.31	0.22	−0.05	0.72	0.21
	Rim volume	0.36	0.14	−0.01	0.95	0.18	0.39	0.11	−0.08	0.54	0.09
	Cup/Disc area ratio	−0.38	0.12	−0.02	0.91	0.20	−0.57	0.01	0.05	0.71	0.02
	Linear cup/disc ratio	−0.41	0.09	−0.04	0.79	0.16	−0.61	0.01	0.05	0.72	0.01
	RNFLT	0.40	0.10	0.12	0.37	0.29	0.50	0.03	−0.08	0.55	0.03

Bold P-values indicate statistical significance (p<0.05).

Table 3 legend: AD–African descent; ED–European descent; EDV–end diastolic velocity; HRT-III–Heidelberg retinal tomography-III; NPCA–nasal posterior ciliary artery; OAG–open angle glaucoma; OCT–optical coherence tomography; r-correlation coefficient; RI–resistive index; RNFLT-retinal nerve fiber layer thickness; TPCA–temporal posterior ciliary artery.