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. 2015 Jun 12;56(6):3850–3859. doi: 10.1167/iovs.15-16450

Figure 1.

Figure 1

Comparison of the Cirrus and Iowa segmentation algorithms of the GCL-IPL complex in a patient with significant optic disc edema. Fundus photography demonstrates grade IV optic disc edema in both eyes (A). Cirrus segmentation of the GCL-IPL complex correctly segments the right eye, but fails to correctly segment the left eye where the segmentation lines collapse upon one another (red arrow) giving rise to artifactual GCL-IPL thinning (B). The Iowa Reference Algorithm correctly segments the GCL-IPL complex in both eyes (C).