sclerotherapy, vein stripping/ligation
Lasers have been used to treat various vascular lesions since the 1970's. By introducing new wavelengths and variable pulse durations, the laser treatment of vascular lesions has become safer and more effectiveHemoglobin is the primary target of Nd:YAG laser light. As the energy is absorbed by the blood in the vessel, heat is created and the vessel wall will be destroyed. Eventually the blood vessel recedes and the body’s natural processes clear away the blood vessel tissue in the same way a bruise is cleared over a period of days to a couple of weeks. Generally blood vessels with a diameter up to 4 mm can be treated. Ideal parameters depend on wavelength, pulse duration, and spot size. In general, longer wavelength laser light penetrates deeper into skin and should be chosen to target deeper vessels. The larger the vessel diameter, the longer the required pulse duration needed to slowly heat the entire vessel. Larger spot sizes penetrate deeper into tissue and optimize fluence delivery to the target.