Can a canthopexy be redone? (photo)

Thank you for your pictures. I agree with your surgeons approach. Canthopexy is just a lifting of the canthus.  A canthoplasty will anchor the canthus and and help retain its position more definitively. This is the most appropriate procedure.

I do not think repeating a canthopexy will help your condition and it may make it worse. I would leave everything alone and try to massage the eyelid upward for at least six months. If the lid still appears retracted see a doctor who is experienced in revision eyelid surgery for an opinion. This condition may improve somewhat on its own but it can take a long time. I usually recommend waiting 12 months before considering revision surgery for post-blepharoplasty lower lid retraction.

You have some lid retraction on both sides, worse on the right.  With warm compresses and massage, and possible steroid / 5-FU injections this may improve.  There are many types of canthopexy.  If your lid stays retracted you will need some sort of canthopexy or canthoplasty to get the corner of the lid back up.  You may also need some sort of a graft.  But you need to wait at least 6 months before making these decisions.