Evaluation of childhood developing via optical coherence tomography-angiography in Qamdo, Tibet, China: A prospective cross-sectional, school-based study

Table 1 Optical coherence tomography angiography measurements of health students in Qamdo divided into habitat distribution which include mean foveal thickness, foveal avascular zone area, and vascular plexus density

	Karuo (n = 28)	Dengqen (n = 38)	Markam (n = 48)	Chagyab (n = 48)	P value
AL, mm	22.71 ± 0.51	22.94 ± 0.75	22.92 ± 0.78	23.02 ± 0.58	0.0346
Foveal thickness, μm	243.00 ± 21.00	233.42 ± 22.31	235.24 ± 15.23	228.18 ± 17.62	0.0075
FAZ, mm2	0.26 ± 0.12	0.32 ± 0.10	0.26 ± 0.10	0.32 ± 0.11	0.0211
FVD, mm-1	20.40 ± 2.05	20.78 ± 1.78	20.24 ± 1.58	20.72 ± 1.45	0.2626
IVD, mm-1	21.55 ± 2.16	22.17 ± 1.56	21.34 ± 1.70	21.66 ± 1.70	0.6049
CVD, mm-1	10.07 ± 3.42	10.59 ± 3.69	10.99 ± 3.75	9.34 ± 3.01	0.1211
cFoveal thickness, μm	226.31 ± 20.40	217.49 ± 18.10	221.81 ± 19.81	218.46 ± 22.06	0.0075
cFAZ, mm2	0.26 ± 0.11	0.28 ± 0.09	0.24 ± 0.09	0.29 ± 0.10	0.1811
cFVD, mm-1	18.33 ± 2.18	19.48 ± 1.70	18.89 ± 1.75	19.30 ± 1.57	0.0532
cIVD, mm-1	19.49 ± 2.34	20.69 ± 1.86	21.34 ± 1.70	21.66 ± 1.70	0.0379
cCVD, mm-1	9.26 ± 2.85	10.12 ± 3.36	10.13 ± 3.13	9.53 ± 3.23	0.5612

AL: Axial length; FVD: Full vascular plexus density; CVD: Central vascular plexus density; IVD: Inner vascular plexus density; FAZ: Foveal avascular zone; MFT: Mean foveal thickness.