Figure 6: Gain in photoreceptors light absorption in the human parafoveal retina, due to Müller cells’ spectral separation.
(a–c) The gain of cones’ absorption ACone(λ)=M(λ)C(λ) (red, green and blue respectively), as derived by multiplying the Müller cell light concentration into cones, M(λ) (grey bars) by the absorption spectrum of human cones’ visual pigments (C(λ), line curves). (d) The rod absorption (black), as derived by multiplying the light spectrum leaking outside Müller cells (grey bars) by the absorption spectrum of human rod visual pigment—R(λ). (e) The total light absorption in cones is increased by Müller cells’ light concentration. The gain is highest for long-wavelength cones, slightly lower for the middle-wavelength cones, and lowest for the short-wavelength cones. Photon absorption by rods (black) is reduced by ~20%.
