>Would her corneas be thicker and would there be vision changes in
>the curvature of her eye due to breastfeeding at this point?

I don't know if it's lactation related, but my pregnancy--induced
vision changes didn't correct themselves fully until the return of
menses (28 mo).  I'd suggest she wait till then before doing anything
irreversible to her cornea.  JMO

Jennifer Landels, BA, CE
Vancouver BC