Nothing with ptosis surgery is guaranteed, especially when considering a third revision. The majority of the surgery I do is fixing botched eyelid surgery, which often includes failed or unsatisfactory eyelid surgery. If I were to guess, it is likely your first surgery was a Müllerectomy. Your second surgery might have been another Müllerectomy or an anterior levator ptosis surgery that still did not get the job done. Commonly at that point surgeons start telling patients that they are fixed as much as possible or that in time the symmetry will get better, or worse that you are overly fussy and the result is good. What you have is a central levator disinsertion ptosis. In my opinion these do not respond well to Müllerectomy ptosis surgery. You can see that the heavy eyelid has upper eyelid fullness. Under the eyelid fold, the crease is likely high. All of these issues need to be addressed to correct your issues. There is no substitute for a detailed in person assessment. Second opinions are helpful but make sure before you spend your money, the surgeon actually performs this type of surgery. Some of my colleagues claim to be in the fix-it businesses but they actually only accept very select cases and do very little of an examination, leaving you with little value after you have paid for an expensive consultation.