Fig. 6 A: Adaptive optics image of the retinal cone mosaic 1 degree nasal to the fovea. The retina was illuminated with 550 nm light. Approximately 50 images were averaged. The small circles are individual cone outer segments. B: Pseudo color image of the retinal cone mosaic. The colors red, green, and blue represent the locations of individual L, M, and S cones respectively. The subject and retinal region shown correspond to Figure 6A. Individual cone types were assigned using selective bleaching experiments. (From http://www.opt.uh.edu/research/aroorda/. The images were taken at the University of Rochester and are provided courtesy of Austin Roorda and David Williams.)