epicanthoplasty epicanthoplasty epicanthoplasty is a rare eye surgery to modify the epicanthal folds. it can be a challenging procedure because the epicanthal folds overlay the lacrimal canaliculi (tear drainage canals). although an epicanthic fold can also be associated with a less prominent upper eyelid crease (a feature commonly termed "single eyelids" as opposed to "double eyelids"), the two features are distinct; a person may have both epicanthal folds and an upper eyelid crease, one and not the other, or neither. single eyelids are reshaped using east asian blepharoplasty. epicanthoplastyicd-9-cm08 epicanthoplasty may leave visible post-surgical scar lines. a common corrective technique involves using z-plasty.