Losing Eyelashes After Upper Blepharoplasty/Eyelid Surgery?

  Eyelash loss after eyelid surgery is very unusual.  If the eyelashes were avulsed by tape of something such as that, they should grow back.  Latisse can be used to improve length and thickness, once the eyelids return to their growth phase.

Actually this is a complication I have never heard of, and I do quite a bit of transplant work restoring eyelashes.  My recommendation is for you to use Latisse and give things 6 months to regrow.  I would also think that a short term course of steroids may be of some value.

Mild, temporray lash loss is possible after any eyelid surgery but significant lash loss is not normal.  Is the lash loss segmental or diffuse.  A photo (or examination) would be useful.  See an oculoplastic specialist. 

This is probably due to the surgery and though not usual it can happen I would be patient and give it soem time.