The Changes of Retinal Saturation after Long-Term Tamponade with Silicone Oil

Table 3

Differences in the retinal saturations before and 2 months after silicone oil removal.

Duration	Arterioles			Venules			AV difference
	Sat O2 (%)			Sat O2 (%)			Sat O2 (%)
	Before surgery	After surgery	P value	Before surgery	After surgery	P value	Before surgery	After surgery	P value
3–6  months ()	106 ± 9	105 ± 8	0.425	62 ± 9	62 ± 6	0.934	44 ± 11	43 ± 7	0.515
6–9  months ()	105 ± 12	103 ± 9	0.294	60 ± 11	60 ± 11	0.883	44 ± 13	43 ± 9	0.506
>9  months ()	111 ± 14	107 ± 10	0.200	58 ± 9	62 ± 7	0.114	54 ± 16	45 ± 9	0.009
Total ()	107 ± 12	105 ± 9	0.061	60 ± 10	62 ± 8	0.275	47 ± 14	43 ± 8	0.014

Compared by paired -test.