MICHAEL DONNE / SCIENCE PHOTO LIBRARY MICHAEL DONNE / SCIENCE PHOTO LIBRARY
Laser thread vein treatment. Woman undergoing laser cosmetic treatment to remove thread veins from her face. The laser operator is using an illuminated magnifying glass to see the woman's skin more clearly. Thread or spider veins are dilated capillaries in the skin. They most often form on the cheeks, nose and legs. They are not dangerous, but many people wish to have them removed for cosmetic reasons. The laser operator focuses a low-energy laser beam through a pen-like tool onto the patient's skin. The heat from the laser is absorbed by the blood vessels, causing the blood to coagulate and be broken down by the surrounding cells.
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