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

Table 3 Clinical characteristics of the study samples and optical coherence tomography measurements of retinal and subfoveal choroidal thickness according to ages

	5 (n = 2)	6 (n = 20)	7 (n = 40)	8 (n = 33)	9 (n = 35)	10 (n = 39)	11 (n = 36)	12 (n = 38)	13 (n = 43)	14 (n = 36)	15 (n = 15)	≥ 16 (n = 10)	P value
F:M	0.001389	0.464583	0.888194	0.760417	0.761806	0.846528	0.639583	0.927778	0.93125	0.7625	0.461111	0.252778
Vision	4.90 ± 0.07	4.90 ± 0.19	4.90 ± 0.05	4.90 ± 0.08	4.89 ± 0.18	4.78 ± 0.29	4.72 ± 0.29	4.66 ± 0.34	4.73 ± 0.36	4.59 ± 0.36	4.60 ± 0.32	4.67 ± 0.37	< 0.0001
AL, mm	22.34 ± 0.77	22.54 ± 0.66	22.64 ± 0.67	23.02 ± 0.82	22.97 ± 0.75	23.11 ± 1.06	23.73 ± 0.77	23.70 ± 1.04	23.54 ± 0.99	23.98 ± 1.06	24.08 ± 0.76	24.59 ± 1.63	< 0.0001
MFT, μm	212.00 ± 2.83	216.18 ± 13.22	232.08 ± 15.00	235.77 ± 15.24	242.47 ± 15.36	248.04 ± 14.05	242.94 ± 14.59	236.35 ± 17.29	242.75 ± 20.62	249.40 ± 26.93	243.62 ± 16.51	233.67 ± 10.50	0.00097
FAZ, mm2	0.64 ± 0.90	0.34 ± 0.13	0.30 ± 0.11	0.31 ± 0.13	0.30 ± 0.11	0.25 ± 0.10	0.28 ± 0.120	0.32 ± 0.12	0.26 ± 0.13	0.30 ± 0.08	0.32 ± 0.09	0.31 ± 0.17	0.008
FVD, mm-1	15.80 ± 0.9	19.90 ± 1.57	20.51 ± 1.39	20.45 ± 2.19	20.62 ± 0.90	21.02 ± 1.63	20.40 ± 1.66	20.68 ± 1.50	20.27 ± 2.23	20.65 ± 1.55	20.62 ± 1.58	21.83 ± 1.18	0.04549
IVD, mm-1	17.20 ± 1.27	21.35 ± 1.68	21.91 ± 1.30	21.84 ± 2.18	21.91 ± 0.99	22.22 ± 1.61	21.70 ± 1.69	22.18 ± 1.44	21.65 ± 2.22	22.00 ± 1.56	22.00 ± 1.51	23.23 ± 0.76	< 0.0001
CVD, mm-1	5.30 ± 0.99	8.58 ± 2.78	9.67 ± 3.04	9.44 ± 3.33	10.36 ± 2.61	11.68 ± 3.01	10.22 ± 2.68	8.95 ± 2.70	9.52 ± 3.51	10.05 ± 2.73	9.61 ± 3.10	10.83 ± 4.31	< 0.0001
cMFT, μm	215.700 ± 3.456	216.14 ± 23.13	217.53 ± 22.41	217.45 ± 39.31	231.87 ± 22.93	233.82 ± 20.25	233.96 ± 18.59	236.02 ± 25.43	235.73 ± 26.33	219.88 ± 25.95	224.18 ± 30.12	223.87 ± 31.33	0.0012
cFAZ, mm2	0.46 ± 0.23	0.32 ± 0.08	0.24 ± 0.13	0.25 ± 0.08	0.24 ± 0.11	0.26 ± 0.11	0.30 ± 0.10	0.31 ± 0.11	0.26 ± 0.09	0.28 ± 0.09	0.39 ± 0.35	0.20 ± 0.11	0.0026
cFVD, mm-1	17.62 ± 0.87	18.79 ± 1.47	18.78 ± 2.59	18.89 ± 1.97	19.45 ± 2.16	19.49 ± 2.14	19.83 ± 1.73	19.93 ± 2.12	19.74 ± 2.08	19.12 ± 1.89	18.93 ± 2.57	18.81 ± 2.72	0.01862
cIVD, mm-1	19.26 ± 0.45	20.05 ± 1.46	19.92 ± 2.67	20.02 ± 3.96	20.57 ± 2.15	20.70 ± 2.21	21.11 ± 1.84	21.22 ± 2.06	21.02 ± 2.11	20.32 ± 2.05	20.16 ± 2.42	20.17 ± 2.63	0.01886
cCVD, mm-1	5.08 ± 3.23	8.87 ± 3.18	9.95 ± 3.93	10.32 ± 3.51	10.77 ± 4.13	10.07 ± 3.73	9.90 ± 3.26	9.95 ± 4.88	9.71 ± 2.74	9.53 ± 3.15	9.25 ± 4.00	8.33 ± 4.17	0.02676

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