Cyst on Lower Eyelid.

A cyst can occur after surgery  on the eyelids as suture is used, and there are many tiny glands present.  When a suture is used, and a knot is formed to close your skin, a micro gland may be pinched closed, and when the suture is removed, the gland fails to open back up.  This is a risk to all who have the procedure, and can happen to any surgeon.  This is just one of the risks of surgery.  The cyst may go away, stay the same size, or get bigger.  Ask your doctor to remove the cyst and you can submit it to insurance.  Just be sure to get authorization from your insurance.

It is not uncommon for patients to develop milia or cysts at the margin, where sutures were placed. Depending on the nature of the lesion, it could be unroofed or removed. Generally, milia do not grow but a cyst can become infected. I would encourage you to return to your surgeon for evaluation and treatment. Unroofing a milia is extremely minor and I would be surprised if you were charged a fee for this, although every doctor has different policies after the initial followup period. Cyst removal would be covered by your health insurance.

A cyst that has been present for a year will probably need to be removed.  The cyst could grow if left untreated.  It is difficult to say whether the cyst is from the surgery or it developed naturally, but the best thing to do is discuss it with your surgeon.  If your surgeon is comfortable removing it then he should proceed.  If not then seek out a surgeon specializing in eyelid plastic surgery and reconstruction.