The target chromophore in the treatment of VL, is oxyhemoglobin The laser system which are commonly used are Pulse Dye Laser (PDL), KTP Laser, Nd:YAG (1062 nm Laser). IPL is also based on the principle of selective photo thermolysis. Nd:Yg LASER 1064 nm has longer wave length which can penetrate deep into the dermis (skin) to a depth of 4 to 6 mm to coagulate deeper larger vessels. Superficial hemangiomas (red patch) respond very well to laser therapy. Port wine stain or Capillary vascular anomaly may be arterial venus or lymphatic malfunction mostly seen in head and neck areas as reddish or pinkish patch. Other vascular lesion include Cherry Angioma which is are well defined small red papule which increase with age.
Venus lakes are dilated veins which are amenable to laser therapy. Lymphatic abnormalities like Cystic Hygroma, Lymphangioma Circumscriptum which present as small vesicles are treated with Nd:YAG or CO2 Lasers.