Table 3. Reproducibility of first to second scan measurements of each inner retinal layer.

The data from one eye of each subject was classified into one of four categories based on border clarity. If there was a difference in the classification of the first and second scan data sets from the same eye, then that eye was placed in the lower quality category. The ICCs were only calculated where n > 5. The inter-eye correlation is also shown for each retinal layer for both groups.

	Nystagmus (n=49 for ICC of repeated measures from one eye) (n=47 for ICC of inter-eye comparison)
Retinal layer	Clear		Not Clear		Not Visible		Not Present
	ICC (n)	Inter-Eye (n)	ICC (n)	Inter-Eye (n)	ICC (n)	Inter-Eye (n)	ICC (n)	Inter-Eye (n)
NFL	0.481 n = 24	0.721 n = 20	n = 2	0.369 n = 5	n = 1	n = 1	n = 22	n = 21
GCL	0.623 n = 14	0.750 n = 9	−0.313 n = 12	0.581 n = 14	n = 2	n = 3	n = 21	n = 21
IPL	0.741 n = 16	0.781 n = 10	0.425 n = 13	0.218 n = 15	n = 4	n = 6	n = 16	n = 16
GCL and IPL	0.870 n = 24	0.819 n = 19	n = 4	0.833 n = 6	n = 3	n = 4	n = 18	n = 18
INL	0.778 n = 23	0.760 n = 18	0.602 n = 5	0.684 n = 6	n = 5	n = 7	n = 16	n = 16
OPL	0.401 n = 21	0.536 n = 13	0.845 n = 7	0.597 n = 10	n = 5	n = 8	n = 16	n = 16

Clear = Borders of the retinal layer can be delineated accurately

Not Clear = Borders of the retinal layer are visible but indistinct making delineation inaccurate

Not Visible = Retinal layer is visible but the delineating borders are not visible

Not Present = Retinal layer is not present

ICC = intraclass correlation coefficient; n = sample size; CMT = central macular thickness; NFL= nerve fiber layer; GCL= ganglion cell layer; IPL= inner plexiform layer; INL= inner nuclear layer; OPL= outer plexiform layer