How long does Alloderm graft last to correct sagging in lower eyelids?

Does Alloderm last as long as soft palette graft to fix sagging in lower eyelids? And how long can either expect to last? In my case the sagging is due to a previous lower eyelid surgery, done many years ago, where too much fat was removed, and now lower lids have pulled down.I am looking for a long-term solution.

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