Figure 2. Retinal signal intensity data, normalized to muscle, for light (blue symbols (means) and lines (SEMs)) and dark (black symbols (means) and lines (SEMs)) plotted as a function of distance from the vitreous-retina border (0%) to the retinal-choroid border (100%) for wild type (WT; left graph) and knock out (KO; right graph) mice. The red line indicates the retinal region demonstrating a significant difference (p<0.05) between light- and dark-adapted WT mice.