Can I Have a Blepharoplasty if There is Still Some Filler Left?

I strongly believe that it is best until all of the filler is gone before proceeding with eyelid surgery. Filler present in the tear trough area can masquerade the orbital rim and allow for misjudgment when removing eyelid fat. It can make the surgery more technically difficult and thus increase the chance of a poor outcome.
If you must have the surgery sooner rather than later, hyaluronidase can be applied to the area to dissolve the filler (if a hyaluronic acid was used). The best option, however, is to be patient and wait it out.

You will most likely get various and diverse opinions in answering your question. Personally, I would prefer that your filler be completely gone before performing ablepharoplasty. Any unnatural distortion of the eyelids can potentially effect thedesired contours following surgery. You would only have to wait a matter of monthsbefore all the filler is gone, so why take a chance of creating a problem and potential dissatisfaction?