👉 Advanced veins, also known as deep veins or perforator veins, are smaller and more superficial than larger veins like the great saphenous vein. They run deeper within the body, often connecting superficial veins to deeper ones, and are frequently found in the legs and feet. These veins play a crucial role in returning blood from the lower extremities back to the heart, but they can become compressed or damaged due to prolonged standing or sitting, leading to conditions like varicose veins. Advanced veins are typically treated with minimally invasive procedures such as endovenous laser ablation or radiofrequency ablation to restore normal blood flow and alleviate symptoms.