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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 7.

Figure 7

GVF 16 (31 isopter misses, 15 seeing/non-seeing errors). This was the most complicated GVF presented to the digitizers. All isopters were within the central 20° of this field, and that area is shown with 200% magnification in the top-left inset. The III-4e seeing area (~5° inferior-nasal from fixation, along the 300–315° meridians) was missed 9 times: consistently by Digitizer 10, 2 of 3 times by Digitizers 4 and 9, and 1 of 3 times by Digitizers 2 and 6. Missing the true III-4e seeing isopter was accompanied by mislabeling the IV-4e non-seeing isopter as the III-4e seeing isopter for Digitizers 4, 6, and 9. No other target-size errors were made for this GVF. The IV-4e non-seeing isopter was missed 18 of 30 times, while the IV-4e seeing isopter was never missed. The V-4e non-seeing and central seeing (~3° superior-nasal from fixation, along the 15–30° meridians) isopters were each missed twice. Missing the V-4e non-seeing isopter was accompanied by mislabeling the central seeing isopter as non-seeing. The two inner V-4e isopters were each additionally mislabeled as seeing or non-seeing four other times.