Eyelid twitching (AKA blepharospasm) after blepharoplasty is most commonly associated with some dry eye issues, especially since dry eye syndrome is one of the most common side effects experienced by patients after blepharoplasty. The first step is to start using artificial tears on a regular basis about 3-4 x /day and see if that helps with the issue. Bright light tends to be a trigger as well, and so it would be advisable to wear sunglasses while outside. It is also probably a good idea to limit your caffeine intake, or any other stimulants including stress, nicotine, etc. that can exacerbate blepharospams. If these simple things do not help the twitching resolve, I would recommend consulting with your surgeon. Best, Dr. Gregory Lewen