How do I treat a scab under my eye following a lower blepharoplasty?

Apply antibiotic ointment to the scab and the scars and visit your Plastic Surgeon.  They will remove the scab and the sutures for you. If the sutures are left in too long, they can lead to further scarring. Address this matter with your surgeon.  Best wishes.

I suspect that your scabs are not going to lead to scarring. The absorbable stitches are probably holding some blood and scabs that would have fallen off on their own.Go see you doctor. Snipping out the stitches will most likely remove all scabs that you have since it is so long from your Blepharoplasty.Scabbing that is prolonged after some operations can imply increased scars. Getting poor scars from a lower Blepharoplasty is very unlikely. The incisions usually heal extremely well. However, this is not the case if internal scaring occurs that pulls the lid down. This is most likely not your situation at all.Make an appointment and I'm sure all is well!Dr Chris Saunders

Some dissolvable stitches don't like to disappear as fast as we think they should.  There are a variety of reasons for this.  Bottom line is that if the don't go away fast enough on their own that need to be removed.  Your surgeon can assess your scabs at that time.