Varicose veins are blood vessel that have become swollen, enlarged and twisted. Improperly working valves in the veins cause the disorder, In people who have this condition, blood returns up to the heart from the veins in the legs because of the contraction of the calf muscles, Normally, valves in these veins prevent blood from flowing backwards, down towards the feet.
“People with varicose veins have leaky valves, which means that some blood flows backward and pools in the veins, causing them to become enlarged,
The procedure called end venous laser ablation, or laser therapy, uses heat generated by laser energy to seal off faulty blood vessels, diverting blood flow immediately to nearby healthy veins.
Foam treatment involves injecting drugs into a blood vessel. The medicines, when mixed with air, cause the vessel wall to thicken, which also helps to seal off blood flow. The recent study showed that foam was less likely than the other treatments to completely close a vein that had leaky valves, which may increase the likelihood that a patient will need future treatment.

What is laser leg vein therapy? 

Laser leg vein treatment uses a long wave 1064 YAG laser to improve and eliminate the appearance of small leg veins. The laser light bypasses the outer layer of the skin and injures the small blood vessels of the leg. This causes them to gradually shrink and go away. This spider vein treatment works best for small-to-medium-sized vessels.