The effect of incorrect scanning distance on boundary detection errors and macular thickness measurements by spectral domain optical coherence tomography: a cross sectional study

Table 6 Intraclass correlation coefficients (ICC) of the retinal thickness values by study groups

	All eyes	Normal	DME	AMD
R1	0.995	0.978	0.994	0.973
R1	[0.990; 0.998]	[0.909; 0.995]	[0.979; 0.999]	[0.896; 0.993]
R2	0.988	0.983	0.986	0.992
R2	[0.975; 0.994]	[0.935; 0.996]	[0.942; 0.996]	[0.968; 0.998]
R3	0.991	0.990	0.992	0.940
R3	[0.981; 0.996]	[0.953; 0.997]	[0.970; 0.998]	[0.790; 0.985]
R4	0.988	0.989	0.983	0.991
R4	[0.976; 0.994]	[0.957; 0.997]	[0.938; 0.996]	[0.959; 0.998]
R5	0.998	0.925	0.998	0.974
R5	[0.995; 0.997]	[0.731; 0.981]	[0.993; 1.000]	[0.905; 0.993]
R6	0.992	0.978	0.990	0.980
R6	[0.982; 0.996]	[0.916; 0.995]	[0.946; 0.998]	[0.927; 0.995]
R7	0.992	0.924	0.996	0.931
R7	[0.984; 0.996]	[0.741; 0.980]	[0.985; 0.999]	[0.762; 0.982]
R8	0.866	0.953	0.771	0.976
R8	[0.739; 0.933]	[0.817; 0.988]	[0.212; 0.919]	[0.914; 0.994]
R9	0.995	0.927	0.993	0.991
R9	[0.990; 0.998]	[0.664; 0.983]	[0.973; 0.998]	[0.956; 0.998]

The results of the reliability examination of the retinal thickness values between optimal and suboptimal scan distance settings are shown as ICC and the lower and upper border of the 95% confidence intervals.
Abbreviations: ICC Intraclass correlation coefficients, DME diabetic macular edema, AMD age-related macular degeneration.

ISSN: 1471-2415