Table 2.

Oxygen saturation in major retinal vessels before the surgery and 1 month and 6 months after the surgery

	Before surgery	1 month	6 months
Arterial saturation
Overall (n=53)	96.3±6.2	99.5±5.0**	99.0±5.7**
ERM (n=38)	95.8±6.8	98.9±5.5**	98.6±6.3*
MH (n=15)	97.5±4.5	101.2±2.4**	100.2±3.6
Venous saturation
Overall (n=53)	54.1±7.7	61.1±6.2**	63.1±5.5**
ERM (n=38)	53.7±8.3	62.4±6.2**	63.3±5.5**
MH (n=15)	55.0±5.7	57.7±4.8	62.5±5.6**
A-V different saturation
Overall (n=53)	42.2±6.9	38.4±7.2**	36.0±5.4**
ERM (n=38)	42.2±7.7	36.5±5.7**	35.3±5.7**
MH (n=15)	42.4±4.4	43.5±5.0	37.6±4.4**

Notes: Data presented as mean ± SD. Unit: %.

^*P<0.05,

^**P<0.01, compared with preoperative values (Wilcoxon test with Bonferroni correction).

Abbreviations: ERM, epiretinal membrane; MH, macular hole; A-V, arteriovenous.