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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Optom Vis Sci. 2014 Aug;91(8):1021–1030. doi: 10.1097/OPX.0000000000000326

Figure 5.

Figure 5

(A) Photo of the Pelli-Robson contrast sensitivity chart used. (B) The same chart photographed through the Glass. Strong edges are enhanced when the high contrast edges are targeted. (C) When low contrast edges are targeted, camera and other system noise are also enhanced, but still the structured edge formation can be observed. Compare that to the ideal conditions calculated in Fig. 2, which is free of camera noise. Note that the edge free portion of the display is not completely dark due to leakage of the LCD display backlight. A color version of this figure is available online at www.optvissci.com.