Endovenous Laser Ablation (EVLA) Procedure is a minimally invasive treatment for varicose veins, used to close faulty veins with laser energy under ultrasound guidance. A thin fiber is inserted through a small incision into the diseased vein; when activated, the laser heats the vein wall, causing it to collapse and seal shut. Patients of USA Vein Clinics near me in Chicago, IL, can expect this outpatient procedure to take about 30-60 minutes, with local anesthesia and minimal discomfort.