Table 2.

Repeatability of optic nerve head measurements with SD-OCT in children (N = 128).

	Repeated measurements (mean ± SD)
Parameter	1. measurement	2. measurement	3. measurement	ICC
C/D area ratio	0.20 ± 0.14	0.20 ± 0.13	0.20 ± 0.13	0.951*
C/D vertical ratio	0.37 ± 0.19	0.38 ± 0.18	0.37 ± 0.18	0.908*
C/D horizontal ratio	0.44 ± 0.22	0.45 ± 0.21	0.44 ± 0.21	0.912*
Rim area (mm2)	1.85 ± 0.48	1.84 ± 0.45	1.84 ± 0.45	0.983*
Disc area (mm2)	2.29 ± 0.42	2.29 ± 0.41	2.30 ± 0.42	0.999*
Cup volume (mm3)	0.09 ± 0.11	0.08 ± 0.11	0.09 ± 0.11	0.950*

Note. C/D = cup to disk; ICC = intraclass correlation coefficient.

*p < 0.001.