Table 1. Summary of the intraclass correlation coefficients (ICCs), 95% limits of agreement (LoAs), coefficients of repeatability (CRs), and coefficients of variation (CVs).

	1 : 1 Pixel images				1 : 1 Micron images
	CV (%)	ICCs	95% LoA (μm)	CR (μm)	CV (%)	ICCs	95% LoA (μm)	CR (μm)
Intraobserver (A1 and A2)
Total	4.2	0.989	−34.8 to 38.9	36.5	4.2	0.991	−35.8 to 36.9	36.4
Thin	3.5	0.980	−18.1 to 16.4	17.3	3.8	0.979	−18.4 to 19.4	18.9
Intermediate	3.9	0.967	−31.3 to 33.1	32.2	4.0	0.967	−33.9 to 31.0	32.4
Thick	4.2	0.964	−42.0 to 56.2	49.1	4.1	0.968	−43.5 to 53.0	48.2
Interobserver (A1 and B)
Total	9.1	0.948	−78.2 to 81.6	79.9	9.0	0.949	−81.3 to 75.0	78.1
Thin	6.8	0.945	−38.4 to 17.2	27.8	6.8	0.966	−36.2 to 10.6	23.4
Intermediate	8.3	0.809	−72.1 to 64.9	68.5	8.3	0.813	−74.4 to 57.6	66.0
Thick	9.4	0.747	−87.2 to 125.5	106.4	9.3	0.758	−93.8 to 119.8	106.8

A1: first measurements of observer A; A2: second measurements of observer A; B: measurements of observer B.

The readers were blinded to each other's readings.