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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

Table 2.

Distribution of SDs of Isopter Group (IG) area measurements within IGs. (Note: IG area = total seeing area in a GVF recorded with a particular target size)

SDs across IGs (mm2)
SD type, within IGs Mean Median Minimum Maximum
Overall (all measurements) 2.7 1.0 0.035 88
Between digitizers 1.7 0.70 0.022 51
Within digitizers 1.4 0.52 0.0050 280