# Photochemical effect: clinically referred to as photodynamic therapy. Photosensitizer (photophrin II) is administered which is taken up by the tumor tissue and<unk>  irradiated by<unk>  light resulting in highly toxic substances with resultant necrosis of the tumor. Photodynamic therapy is used in palliation of oesophageal and bronchial carcinoma and ablation of mucosal cancers of Gastrointestinal tract and urinary bladder. # Photoablative effect: Used in eye surgeries like band keratoplasty, and endartectomy of peripheral blood vessels. # Photothermal effect: this property is used for endoscopic control of bleeding e.g. Bleeding peptic ulcers, oesophageal varices # Photomechanical effect: used in intraluminal lithotripsy
Laser surgery
GreenLight Laser Therapy
Low-level laser therapy
Laser medicine
Laser hair removal
Laser coagulation
Refractive surgery
Oculoplastics