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. 2015 Dec 23;10:29–42. doi: 10.2147/OPTH.S92018

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© 2016 Wong et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

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A closer inspection of threshold measures for Subject 9 at visits 2 (A) and 3 (B) show that the test grid has shifted temporally and rotated counterclockwise with respect to the optic disc and vascular arcades, causing complete discrepancy of scotoma mapping.

Note: Retinal sensitivity values are represented by numbers (0–20) and overlaid on the fundus image. Discrepancy of scotoma mapping is due to a registration error occurring during the follow-up test when the Nidek software performs automated imaging registration.