Is there anyway to perform lower blepharoplasty without changing the eye shape?

To create a more youthful look with a smooth eyelid to cheek transition, transconjunctival lower blepharoplasty is a great option. The procedure is done through an incision that’s hidden on the inside of your eyelid so there’s no scar on the outside that you can see. Results are certainly surgeon dependent, so it's important to do your research in finding an experienced surgeon, and have him/her evaluate you in person and discuss your options. @drdonyoo

Yes, removing the fat pads through a trans conjuctival approach will leave the muscle supporting the lower eyelid untouched and no stitches supporting the lower eyelid are needed so th eyelid shape will not change.

A trans conjunctival lower eyelid blepharoplasty accomplishes removal of the fat bags from inside the lower lid. There's no external incisions, and it does not change the shape of the eye. The procedure simply gets rid of fat bags creating the puffy look. Make sure you seek out a surgeon who specializes in this type of procedure.