Figure 4.

Segmented B-scan before and after applying manual corrections. (a) Visible segmentation errors such as small peaks, linear offsets, curve offsets, and false segmentations. Manual error removal functions are available for: (b) False segmentation: note that the RNFL is not visible on the left side of the B-scan. The outer boundary of the RNFL is not properly detected. Note that the inner and outer boundaries (outlined in magenta and red, respectively) of the RNFL overlap after manually correcting the segmentation error. (c) Small peaks: note that the small peak or overshoot in the IPL outer boundary (outlined in yellow) has been manually corrected using the “Small Peak” correction function. (d) Foveal center control: the outer boundaries of the IPL, INL, and the OPL (outlined in yellow, cyan, and green, respectively) are made to appear coincident in the central foveal region, according to the control defined in the automated segmentation algorithm. (e) Linear offsets: note that the linear offsets in the outer boundaries of the OPL (outlined in green) are corrected manually by drawing a straight line segment on the specific boundary containing the offset. (f) Curved offsets: note that the curve offsets in the inner and outer boundaries of the INL (outlined in yellow and cyan, respectively) are corrected manually using the “curve plotting” function. (Color online only.)