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Refractive index traits of the cone photoreceptor model. The photoreceptor shape, defined by Eq. (31), is shown in 2-D and 3-D representations. Color code depicts the different refractive indices (n) of the compartments: red = myoid, green = ellipsoid, blue = outer segment and white = surrounding media. Dimension variables are d0 = 5 μm, dos = 1.75 μm, lm = 13 μm, le = 16 μm, and los = 35 μm.
