Blepharoplasty is a surgical procedure to remove excess fat, skin, and muscle from around the eye area. It can entail a variety of techniques depending on the patient's needs. A very common technique is to have an incision made along the natural crease of the upper eyelid. The muscle that gives your eyelids their lower border will then be tightened so it's lifted up higher than before.
Blepharoplasty is great for correcting a lot of different conditions.