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. Author manuscript; available in PMC: 2009 Jun 18.
Published in final edited form as: J Opt Soc Am A Opt Image Sci Vis. 2000 Mar;17(3):641–650. doi: 10.1364/josaa.17.000641

Fig. 5.

Fig. 5

Log Ricco’s area plotted as a function of superior retinal eccentricity for an S-cone mechanism (open circles) and an L-cone mechanism (filled circles) for three observers.