. 2010 Feb;51(2):1071–1078. doi: 10.1167/iovs.09-4325

Table 2.

Comparison of 3D-OCTOR and Cirrus HD-OCT Interpolation Algorithms

OCT Output Parameter	Mean Cirrus HD-OCT Retinal Thickness		Absolute Difference, Mean [Median, Maximum] (μm)^*	Percent Difference, Mean [Median, Maximum] (%)^†
OCT Output Parameter	Cirrus HD-OCT Interpolation (μm)	3D-OCTOR Interpolation (μm)	Absolute Difference, Mean [Median, Maximum] (μm)^*	Percent Difference, Mean [Median, Maximum] (%)^†
Foveal central subfield (subfield 9)	306.77	307.14	0.61 [0.50, 2.50]	0.05 [0.04, 0.23]
Inner circle (subfields 5–8)	336.54	337.34	0.82 [0.55, 12.25]	0.23 [0.16, 2.50]
Inner circle (subfields 1–4)	290.15	291.17	1.02 [0.75, 9.25]	0.34 [0.26, 2.92]

Calculated by subtracting thickness measurements obtained using the 3D-OCTOR interpolation method (on the Cirrus-obtained retinal boundaries) from measurements obtained using the Cirrus HD-OCT interpolation method for each case, and then taking the absolute value.

^†

Percent Difference = (Absolute Difference/(Cirrus HD-OCT interpolation measurement + 3D-OCTOR interpolation measurement)/2) · 100).