We know that in varicose vein, the problem vein stops functioning properly which results in obstruction of blood flow further leading to blood pooling, clotting, development of ulcers.
While performing EVLT, an interventional radiologist uses real time image guidance to insert a thin catheter with a laser fiber into the problematic vein. Once the fiber is in position, the doctor numbs the vein to minimize uneasiness during the procedure with liquid anesthetic solution.
The laser is activated alongwith slow withdrawal of the catheter and fiber which releases heat causing the vein to collapse and close.
As the delinquent vein is closed, blood flows via the remaining healthy veins.
While the above procedure sounds complex, the EVLT technique has been perfected over decades of its application and is now considered among the safest medical procedures.