Impact of coronary artery bypass grafting surgery on the chorioretinal biomicroscopic characteristics

Table 3 Comparison of choroidal and macular thicknesses and macular and prepapillary nerve fiber layer thicknesses before and after coronary artery bypass grafting

	mean ± SD	Median (range)
Preoperative choroidal thickness	283.49 ± 42.79	289 (183-366)
Postoperative choroidal thickness	283.29 ± 43.21	291 (190-359)
P value1	0.853
Preoperative macular thickness	267.92 ± 31.64	263 (221-426)
Postoperative macular thickness	267.33 ± 31.19	261 (218-420)
P value1	0.507
Preoperative macular NFL thickness	12.35 ± 2.30	12 (8-18)
Postoperative macular NFL thickness	12.35 ± 2.64	13 (7-19)
P value1	> 0.999
Preoperative prepapillary NFL thickness	105.10 ± 12.36	103 (79-136)
Preoperative prepapillary NFL thickness	104.98 ± 12.84	101 (76-137)
P value1	0.659
Preoperative venous caliber	101.13 ± 9.20	100.6 (85-121)
Postoperative venous caliber	100.96 ± 9.83	102.3 (85.0-123.2)
P value1	0.673
Preoperative arterial caliber	79.42 ± 7.62	79 (66.3-98.0)
Postoperative arterial caliber	79.39 ± 7.94	79 (65.4-100.2)
P value1	0.923

¹Paired t-test.

NFL: Nerve fiber layer.