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. 2019 Dec;30:67–72. doi: 10.1016/j.cobeha.2019.06.004

Figure 2.

Figure 2

Spectral absorbance of melanopsin (left panel) and pre-receptoral filtering due to lens aging (middle panel). The in vivo spectral sensitivity of melanopsin depends on the age of the observer, with peak spectral sensitivities between 487 nm (20-year old observer) and 496 nm (80-year old observer), depending on the age.