I’m a male in my late 60s considering a lower blepharoplasty with fat grafting to reduce my under eye bags. These bags change in size dramatically day to day or even the same day. A single consultation with a surgeon and how I appear the day of surgery is all the doctor will have to go by. If the under eye bags present as very reduced in size on the day of surgery, how does a surgeon determine the amount of filler to be used with regards to the wide range of “sizes” the patient has experienced?