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. Author manuscript; available in PMC: 2009 Oct 19.
Published in final edited form as: Opt Rev. 2004 Jul 1;11(4):226–234. doi: 10.1007/s10043-004-0226-9

Fig. 5.

Fig. 5

Percent saturation is plotted as a function of field size for two observers, ages 19 (open symbols) and 79 (closed symbols) years. These results were obtained with a 480 nm light presented at 2.5° in the inferior retina. [Data from Knau & Werner59].