It sounds like you had midface elevation and malar implants. A canthopexy or canthoplasty would require an incision somewhere around the outer corner of the eye or upper eyelid to place the canthopexy suture. With that said, release of the canthal tendon from the lateral orbital rim, not...
Of course from the one distant photo provided, it is difficult to be certain. However, there appears to be significant volume deficit in the upper cheek to lower lid region that would account for the hollow appearance that disturbs you. If this is indeed the case, then the use of a robust HA...
