Optical Coherence Tomography Angiography as a Noninvasive Assessment of Cerebral Microcirculatory Disorders Caused by Carotid Artery Stenosis

Table 3

Changes of blood supply to the eyes and brain before and after the operation.

OCTA characteristic	Operated side median (IQR)		Nonoperated side median (IQR)
RPC VD (%)	1.55 (0.40-2.60)	<0.0001	0.65 (-1.65-2.20)	0.4332
Median (IQR)
SVC VD (%)	1.70 (0.40-2.80)	0.0104	0.00 (-2.10-4.60)	1.0000
Median (IQR)
DVC VD (%)	4.00 (0.70-6.50)	0.0104	-1.55 (-3.60-4.30)	0.1691
Median (IQR)
RNFL (μm)	2.50 (2.00-11.00)	<0.0001	4.00 (0.50-6.50)	0.005
Median (IQR)
rCBF	0.19 (0.02-0.31)	0.0011	—	—
△MTT	-0.22 (-0.46--0.16)	<0.0001	—	—

VD: vessel density; RPC: radical peripapillary capillaries; SVC: superficial vascular complexes; DVC: deep vascular complexes; RNFL: retinal nerve fiber layer; rCBF: the ratio of the values measured in the symptomatic hemisphere to those in the asymptomatic hemisphere for cerebral blood flow; △MTT: the absolute difference in mean transit time values between the symptomatic and the asymptomatic hemispheres.