Will taking steroids affect anesthesia for eyelid surgery?

Steroids would not necessarily interact with anesthesia, but it would depend on the type of steroid and the type of anesthesia, as there are many possible types of drugs that could be used during anesthesia.  It's best to make sure you tell your surgeon and anesthesiologist all of the medications you are taking, including steroids, so that they can plan your procedure with the least amount of risk.  

 A small dose of steroids are actually given during anesthesia/ Surgery to help with nausea and vomiting prevention. Patients  who are  on long-term steroids prior to surgery needed check with her anesthesiologist and family physician before undergoing elective cosmetic surgery since they are an immunosuppressant  with long-term usage. For many examples of upper and lower eyelid surgery results, please see the  link and the video below

There are many patients who are on steroids for many reasons that safely have procedures with anesthesia.  Please make sure that your surgeon, the anesthesiologist, as well as the doctor who is prescribing the steroids is aware of the plan.  Sometimes, patients are given a "stress dose" of a higher amount around the time of surgery for safety. 

Good luck!