General anesthesia for blepharoplasty?

Although personally I never use general anesthesia for blepharoplasty, it certainly is not wrong to opt for this anesthetic approach. If your surgeon has always done it this way he will not change his personal practice for you. If you trust his aesthetic eye, experience and care, you likely can trust his choice of anesthesia. 

We perform most blepharoplasty surgery under  local anesthesia. I don't think general anesthesia is needed for most eyelid surgeries. Talk to your doctor or find someone who will use local anesthesia.

Rountinue upper and lower blepharoplasty can be done under local anesthesia with or without sedation in most patients.  The only discomfort endured is the injections to numb the areas to be worked on.  However, if there are extensive fat pockets to contour or fat to translocate, it may be difficult to keep you comfortable during this.  If you are part way thru the surgery and the local anesthesia is not keeping you comfortable, there is usually not an anesthesiologist waiting to put you to sleep.  Your surgeon likely has good reasons for choosing general anesthesia for your surgery and you should realize it is a very safe option for surgery and there are many medications available to help you deal with any nausea, etc.