Table 1. Mean absolute difference and percentage error of neurosensory retinal tissue, foveal central subfield thickness, and total volume in different sampling groups.

Scan density	Mean	SD	Range	Scan density	Mean	SD	Range
	Neurosensory retinal FCS thickness				Total neurosensory retinal volume
128	262.46	107.1	132.9–733.70	128	7.25	0.86	5.97–10.21
64	262.56	106.9	133.7–732.1	64	7.25	0.86	5.98–10.23
32	265.17	119.1	135.3–731.1	32	7.18	0.93	5.97–10.22
16	263.33	102.9	147.5–727.1	16	7.25	0.85	5.96–10.2
8	268.9	99.4	149.8–713.9	8	7.26	0.86	5.97–10.2
4	266.57	96.3	119.3–696.9	4	7.25	0.87	5.97–10.42
Absolute difference (μm)				Absolute difference (mm3)
64	1.21	1.05	0–4.10	64	0.01	0.01	0–0.04
32	2.69	2.49	0.1–10.90	32	0.01	0.01	0–0.07
16	5.97	6.9	0–34.50	16	0.02	0.02	0–0.06
8	14.38	14.02	0.1–47.60	8	0.04	0.03	0–0.14
4	25.64	27.68	0–112.40	4	0.1	0.08	0–0.30
Percentage error (%)				Percentage error (%)
64	0.49	0.43	0–1.85	64	0.13	0.1	0–0.52
32	1.11	0.38	0.03–4.90	32	0.2	0.21	0–0.91
16	2.46	3.05	0–13.62	16	0.24	0.24	0–0.79
8	6.3	6.95	0.05–26.14	8	0.56	0.5	0–2.3
4	9.65	10.42	0–55.63	4	1.33	1.03	0–4.04

Abbreviations: FCS, foveal central subfield; Scan density, number of B-scans.