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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: Optom Vis Sci. 2016 Jul;93(7):720–730. doi: 10.1097/OPX.0000000000000869

Figure 6.

Figure 6

GVF 15 (24 seeing/non-seeing errors). Digitizers 2, 4, and 8 consistently made seeing/non-seeing errors with this field containing a central seeing island, mid-peripheral ring scotoma and far peripherally seen ring of vision. No other digitizers made any seeing/non-seeing errors here. In these cases, the V-4e and IV-4e non-seeing isopters and/or the central V-4e and IV-4e seeing isopters were mislabeled. Digitizer 2 consistently mislabeled the central seeing isopters as non-seeing. Digitizer 4 consistently mislabeled the non-seeing isopters. Digitizer 8 consistently mislabeled both the non-seeing isopters and the central seeing isopters.