Laser therapy is most effective for small and medium size spider veins. Several treatments are usually needed for optimal results. Depending on the machine used, there are various forms of laser treatments. These include argon laser, pulsed dye laser, and intense pulsed light.
How laser therapy works? Successful light-based treatment requires adequate heating of the veins. High-dosage pulsating laser is aimed at the veins and the light energy is absorbed by the veins, but not the surrounding tissue. This technique damages the vessel with heat causing it to collapse or burst, depending on the specific laser used, and results in spider vein removal.
Laser treatment of spider veins is sometimes rendered ineffective by the fact that spider veins may not be close enough to the surface of the legs to be reached by the laser. Laser therapy concidered to be less effective and more painful than sclerotherapy, but we have to stres that spider veins on the face appear to respond better to laser than do spider veins on the legs. Laser treatment is not painless procedure because, the laser needs to heat the vein adequately in order to seal it off.