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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Acta Ophthalmol. 2014 Feb 7;92(5):e377–e381. doi: 10.1111/aos.12353

Figure 1.

Figure 1

Color difference plots of (A) reference control, (B) HCQ-nontoxic, and (C) HCQ-toxic subjects. These consist of two dimensional displays of hexagons interpolated from the 103 hexagon test stimulus. Differences between patient value and age-adjusted normal value corresponding to each hexagon are color-coded, such that blue or black hexagons indicate patient value reductions that exceed 2 standard deviations from normal. Central (Rc) and pericentral (Rp) regions are outlined by white concentric circles.