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 4 Intraclass correlation coefficients (ICC) of the retinal boundary detection error scores and signal strength indexes (SSI) by study groups

	All eyes	Normal	DME	AMD
Entire	0.718	0.337	0.281	0.724
Entire	[0.445; 0.862]	[-0.152; 0.756]	[-0.132; 0.714]	[0.191; 0.924]
Center	0.766	0.476	0.432	0.752
Center	[0.568; 0.881]	[-0.137; 0.835]	[-0.120; 0.810]	[0.252; 0.933]
Periphery	0.591	0.206	0.253	0.889
Periphery	[0.187; 0.803]	[-0.297; 0.690]	[-0.131; 0.689]	[0.632; 0.971]
SSI	0.814	0.941	0.670	0.316
SSI	[0.488; 0.923]	[0.580; 0.987]	[0.141; 0.905]	[-0,176; 0.745]

The results of the reliability examination of the RBDE scores 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, RBDE retinal boundary detection error, SSI signal strength index, DME diabetic macular edema, AMD age-related macular degeneration.

ISSN: 1471-2415