Well, usually when I create eye scaling morphs I import the head and eyes into blender and create a face map for each eye. I then use the proportional editing fall off along with the scale gizmo to scale first one eye, then the other. I scale each to the same numeric value with the same numeric fall off using the eyeball as the center of the scaling and having the fall off influence the surrounding head mesh likewise. It works great doing this way, very exact. Not to mention scaling each eye individually to identical value rather than scaling both simultaneously produces a better result as the origin of the scale isn't an average of the 2 but from each eyes origin. If this makes sense. Scaling both simultaneously results in a sort of goldfish eye type scaling where the eyes also translate a bit in the x axis. Scaling each individually results in the scale propagating from the eye center itself rather than the average which is an origin at the center of the space between both, the average of 2.

So anyway, now with that out of the way, this works great on every figure I've used it on, for Eye scaling morphs (match centers stuff)... La Femme, Nova, Antonia 1.2, V4...

I usually start my head morphs set process with the eyes, creating scaling, rotate, and translate morphs that will be useful in the character process. FBM effecting the eyes themselves and the housing head mesh.

Antonia 1.3 is showing some asymmetries most visible at the lacrimal with such scaling, again I've never seen this before in other figures I've done this process with. Being that it's fall off stuff it's hard to determine if it's the eyes themselves or the lacrimals, though its showing most obviously at the lacrimals that doesn't mean it's the source of the asymmetry, it might be the eyeballs themselves.

I can fix it for my morphs, at least good enough but I figured I'd let you know what I'm seeing. I'll do some more snooping and see if I can narrow the exact asymmetry down.