Both 4.0-MHz radiowave surgery and CO(2) laser incision produce simultaneous incision and coagulation. Both modalities restrict blood loss in the average four lid blepharoplasty surgery to less than 1 cm(3) of blood and decrease operative time. In this study, qualified blinded surgeons judging 12-month postblepharoplasty photos of incisional scars were unable to differentiate a statistically significant difference between the two modalities and the aesthetic quality of the scars. This represents the first study of its type in the literature utilizing Caucasian patients.