Foveal Avascular Zone in Normal Tension Glaucoma Measured by Optical Coherence Tomography Angiography
Table 3
Characteristics of the average value of vertical, horizontal, and maximum diameter, foveal avascular zone area, and vessel density in NTG and control group.
Average between 2 measurements
NTG group
(min-max)
Control group
(min-max)
value
Vertical diameter
649.43 ± 112.55 (517.5–994.5)
512.23 ± 85.90 (344.5–697.0)
<0.001
Horizontal diameter
630.34 ± 63.10 (530.5–834.5)
559.77 ± 83.52 (434.5–801.5)
<0.001
Maximum diameter
731.45 ± 112.96 (616.0–1044.5)
586.83 ± 88.39 (455.5–810.5)
0.001
Foveal avascular zone area
0.412 ± 0.060 (0.295–0.472)
0.292 ± 0.048 (0.178–0.399)
<0.001
Vessel density
39.55 ± 3.81 (35.40–41.90)
46.21 ± 3.36 (43.10–50.80)
<0.001
-test, NTG = normal tension glaucoma, = mean, and SD = standard deviation.