I consulted with a ocular-facial plastic surgeon and he said bilateral symmetry for ptosis is very difficult to achieve.He also said I have good levator function and he would resect the mueller's muscle from underneath the eyelid so there is no external incisions. Is this a job for a ocular-facial plastic surgeon only? How hard is it to achieve near perfect bilateral symmetry for ptosis? I don't want to go down this road if the answer is yes, and have to get revision surgeries.