Table 2.

Retinal PO_2A, PO_2v, O_2A, O_2V, and O_2A−V of Rats (Mean ± SD) Under Normoxia and Graded Levels of Hypoxia

Retinal Oxygenation Parameters	Normoxia, n = 10	Moderate Hypoxia, n = 14	Severe Hypoxia, n = 10	ANOVA P Value FiO2	ANCOVA P Value
					FiO2	BP
PO2A, mm Hg	44 ± 4	29 ± 4	21 ± 4	<0.001	<0.001	0.7
PO2V, mm Hg	26 ± 3	20 ± 3	12 ± 6	<0.001	<0.001	0.001
O2A, mL O2/dL	11.9 ± 1.4	7.3 ± 1.7	4.1 ± 1.7	<0.001	<0.001	0.5
O2V, mL O2/dL	5.4 ± 1.3	3.7 ± 1.2	1.5 ± 1.5	<0.001	<0.001	0.006
O2A−V, mL O2/dL	6.5 ± 1.5	3.6 ± 1.5	2.6 ± 1.2	<0.001	NA	NA

^Pvalues derived by ANOVA and ANCOVA with effects of FiO₂ and BP are reported.