I will help start the thread drift...
1.Human eye DOF is somewhat shallow.
2. Best backround blur (which is NOT what 'bokeh' is defined as, especially not by Zeiss' definition!) is anywhere outside of a very NARROW cone of view [away from where the eye is focused at the moment]
Only the fact that the eye can instantly re-focus, away from a very narrow and very shallow zone of focus, as it moves about the FOV is what gives the IMPRESSION of wide and need zone of focus, contrary to #1 and #2
As for 'bokeh' I rather doubt that improves with cataract lens replaement, as both the original and the replacement are optically very simple, and the original is superior in its ability to refocus for near vs. far because of its inherent flexibility (which gets stiffer as we age). Until Zeiss is able to come up with a compound variable focus lens cataract replacement for our original lens, the spherical distortion correction is what it is, leaving bokeh unchanged.