Lower Eyelid Retraction Surgery - how permanent are results?

This is a complicated specific problem you have that requires in person examination. There are various factors involved including eyeball position and eyelid position. See following link.

Generally if you are satisfied with the position of the lower eyelids, the situation should be stable given that your last surgery was 16 months ago.  If things do change over time, an answer from a surgeon posting on Realself will have very little bearing on your actual situation.  At that point, you would need in person consultations from folks like me who specialize in precisely this type of work.

While each situation differs depending on the type of surgical repair and implant material used, in general, the eyelid position does tend to lower over time due to the effects of gravity and volume loss with aging, but this occurs over a long range of time (years rather than days or months).

Hi there. Greetings from the UK. What you've just asked is one of the most complicated questions regarding thyroid eye disease management. Indeed a recent review in OPRS goes into this into quite a lot of detail. The fact that there are so many different surgical techniques with different types of spacer graft is a direct reflection of how variable and unreliable this sort of surgery is. Best Wishes David