You see many large-eyed starlets in silent films. I show Miriam Cooper. The reason for the big eye love may come from the same reasons that inspire Japanese manga and anime. Large eyes give a wider canvas in which to paint a wide array of emotions.
Most young mammals appear to have large eyes – we see it as a look of innocence. Cosmetics can paint turn sulk or sultry with a few brush strokes. Beauty standards change somewhat with culture, but big eyes and symmetry may always have some draw.
The descriptions I use in my writing often drip with allusion. Cow-eyed may sound insulting, but it just alludes Hera. I may use a slight twist to this cow-eyed trap.
Mary-Kate Olsen (top right) and Ashley Fuller Olsen (bottom left).