Ils this new research ? Why is it for me common knowledge ? Everyone knows blue light looks blurry because blue retina receptors have lower definition

Isn't this well known? The human retina has fewer blue-sensitive cone cells, and very few in the fovea, which sees the sharpest details: https://en.wikipedia.org/wiki/Cone_cell#Distribution

Blue light also probably has more dispersion (aka chromatic aberration) .. I wonder how the eye deals with chromatic aberration, if we just filter it out by processing or if the system doesn't really suffer from it? Edit: or perhaps that's the reason why we don't have high resolution in blue.