There are two mechanisms of light damage with slightly different absorption or action spectra but both peaking in the visible blue-violet
There are two mechanisms of light damage with slightly different absorption or action spectra but both peaking in the visible blue-violet. For relatively low intensity and very long exposures we see what is described as type I damage which appears to result from absorption within the light-sensitive cells and short wavelength or blue cones seem to be the most sensitive.
By contrast for relatively high intensity shorter exposures we recognize type II damage whereby the primary damage seems to occur in the RPE-retinal pigment epithelium and is thought to be associated with absorption by lipofuscin.