Role of Color Doppler Imaging in Early Diagnosis and Prediction of Progression in Glaucoma
Table 4
Comparison of hemodynamic parameters obtained by color Doppler imaging in the following three groups: A—patients with perimetric glaucoma, B—patients with perimetric glaucoma and patients with normal visual field and intraocular pressure but with glaucomatous optic nerve head, and C—the whole study population.
Doppler US parameter
Unit
Patients with perimetric glaucoma ()
Patients with perimetric glaucoma + patients with normal VF and IOP but with glaucomatous ONH ()
The whole population ()
P
OA Ophthalmic artery
PSV
cm/s (SD)
25.60 (10.21)
29.87 (8.79)
27.43 (9.12)
0.234
EDV
cm/s (SD)
5.44 (2.92)
7.28 (2.89)
6.21 (2.77)
0.134
TAV
cm/s (SD)
10.52 (5.10)
14.33 (4.81)
12.01 (5.01)
0.459
RI
(SD)
0.78 (0.05)
0.76 (0.04)
0.77 (0.05)
0.501
PI
(SD)
1.93 (0.48)
1.65 (0.37)
1.79 (0.40)
0.192
S/D
(SD)
4.98 (1.28)
4.72 (1.21)
4.73 (1.22)
0.237
CRA Central retinal artery
PSV
cm/s (SD)
9.00 (2.67)
9.11 (2.44)
9.07 (2.52)
0.109
EDV
cm/s (SD)
1.91 (0.63)
2.14 (0.62)
2.01 (0.62)
0.207
TAV
cm/s (SD)
4.03 (1.26)
4.39 (1.27)
4.16 (1.27)
0.119
RI
(SD)
0.76 (0.05)
0.74 (0.05)
0.75 (0.05)
0.096
PI
(SD)
1.79 (0.50)
1.58 (0.32)
1.67 (0.37)
0.102
S/D
(SD)
4.66 (1.40)
4.21 (1.29)
4.49 (1.33)
0.440
SPCAs Short posterior ciliary arteries
PSV
cm/s (SD)
15.54 (4.58)
15.96 (5.49)
15.87 (5.03)
0.450
EDV
cm/s (SD)
4.50 (1.70)
4.70 (1.97)
4.62 (1.88)
0.691
TAV
cm/s (SD)
8.37 (2.87)
8.45 (3.13)
8.43 (2.99)
0.409
RI
(SD)
0.72 (0.07)
0.70 (0.08)
0.71 (0.07)
0.631
PI
(SD)
1.37 (0.32)
1.20 (0.30)
1.26 (0.31)
0.422
S/D
(SD)
3.88 (1.15)
3.61 (0.98)
3.69 (1.00)
0.702
Visual field (VF); intraocular pressure (IOP); optic nerve head (ONH); values are expressed as mean (standard deviation). Arterial evaluations included peak systolic velocity (PSV), end-diastolic velocity (EDV), time-averaged velocity (TAV), resistive index (RI), pulsatility index (PI), and the relation systole/diastole (S/D). *Significant differences ().
