Can eyelid surgery (for droopy eyelid) be done at the same time or after tear duct cauterization?

Yes in my experience it's possible to have two such procedures done at the same time, Be sure to discuss your goals and concerns with your board certified plastic surgeon and consider the pros and the cons. Be certain your surgeon is properly certified.  I've attached a link where you can start your search. 

Yes - the eyelid surgery can be done at the same time as tear duct cauterization.  We usually do the cauterization in someone who has a very dry eye.  Elevating the lid may aggravate that.  So I would recommend you do the cautery first.  See how your dry eye is after that.  If you still have a very dry eye, may not want to lift the lids.    

Yes you should be able to do both at the same time.Discuss this with your doctor.Your tear ducts may not function well due to swelling from the surgery but this will go down.

Yes, these two procedures may be safely done at the same time... or one and then the other. If you have cosmetic blepharoplasty, you are at less risk for exacerbating dry eye than if you are having ptosis repair. If there is any concern that your dry eye(s) situation may become worse after surgery, then it makes perfect sense to have them done at the same time. Best wishes.