How Long Do Double Eyelid Surgery Results Last?

There are variations when it comes to the incisional and suture techniques when it comes to 1) the final appearance of the fold 2) the final apperance of the upper eyelids in general 3) how long the fold lasts and 4) the recovery period.

To answer your question, the incisional technique should last longer, but also has a longer recovery period. The longer recovery associated with the incisional technique is often acceptible to patients since the results are more permanent and the surgeon has more control to remove extra skin and fat (useful when the patient has eyelids that are ageing or puffy), and design the crease height and shape (inside fold, outside fold, etc).

Sincerely,

Dr. Buonassisi

In theory, forever. A few things about it though.
Non-incision method relies on the suture to keep the crease there and less scarring (which in some cases a better thing) means that there are less forces acting on to stop it from coming undone. This is why non-incisional technique is said to have higher rate of needing a revision (because it can come undone) but I don't personally find that to be the case. The reason probably is that the patients chosen to do an open incisional technique are the ones that- 
1) Have thicker skin so an incision is needed to define the crease better
2) Need something else done for instance reduction of eyelid fat or repositioning of the eyelid due to ptosis.
So the patient selection is vital and each techniques needs to be carefully selected for that individual so that you give it the best chance of achieving the result whichever technique is used.
Wishing you the best in your journey.
Dr Leo Kim, Specialist Plastic Surgeon in Sydney