The trend seems to have continued into the Roman republic era before giving way to more realistic facial proportions by the mid-empire era.
Any explanation why they portraits tend to have really pronounced eye sizes? Is it a statement about the gods abilities to see better than ordinary humans? The Greeks are famous for playing around with proportions, columns of temples were designed using forced-perspective to make the columns appear taller when a person viewed them up close. Could the oversized eyes on portraits be another such trick?
Just curious if theres any accepted explanation. I didn’t really notice it until I started trying to draw a profile portrait in a similar style. None of the typical ‘artistic tricks’ worked, the eyes are typically about 15-30% larger than they should be.